Irish eyes were smiling (as were everyone else’s) as “Peepshow” (at Planet Hollywood) star Holly Madison kicked-off a four-day St. Patrick’s Day block party at O’Sheas. She narrowly defeated Lucky, the O’Sheas leprechaun, in a grueling match of beer pong. 

A big part of success in beer pong is distracting one's opponent.

The action was fast and furious, but in the end, Holly Madison emerged victorious.

It's "Nothing but cup!" for Holly Madison at O'Sheas.

 Lucky and Holly greeted fans, most already in the St. Patrick’s Day spirit. 

Holly and Lucky mingle with their fans. Who will probably not recall it happened. We're just saying.

The street between O’Sheas and Flamingo is party central for St. Patrick’s Day in Las Vegas. 

A sea of green outside O'Sheas and Margaritaville.

So, here’s a little quiz: Where do actual Irish people go to celebrate their nation’s biggest day? You guessed it… 

Trevor, Tracy and Ian are from Dublin, Ireland. Oh, snap! Take that, Ireland!

You won’t want to miss the sights and sounds of all the excitement at O’Sheas! Events and live entertainment are scheduled throughout the next few days. See the schedule. 

Make sure to wear your St. Paddy's Day bling!

Don’t miss out on the green beer and green popcorn and green cotton candy. There’s a lot of green. 

Springtime temps call for frosty (green) drinks at O'Sheas.

More photos to come, of course! (Note: They may be blurry. We’re just saying. It’s St. Patrick’s Day in Vegas!)

How are you celebrating St. Patrick’s Day? For our money, there’s no luckier place to play and revel and debauch than O’Sheas at the heart of the Las Vegas Strip.

Follow O’Sheas on Twitter, or fan them on Facebook, for all the latest news, including updates from the four-day block party hosted by O’Sheas (the party happens between O’Sheas and Flamingo).

Get some details about the party here.

While not required, a love of beer tends to help in one's enjoyment of this hallowed day.

Another must-sip spot for St. Paddy’s Day is McFadden’s at Rio Las Vegas. At McFadden’s, it’s technically St. Patrick’s Day all-year-round, but it’s especially festive when the actual St. Paddy’s Day rolls around. Get an update on all the shenanigans.

And if you’re in one of our city’s spectacular casinos today, may the luck of the Irish be with you. Or with “ye,” if ye be into that kind of thing.

The World Series of Poker is putting up a million bucks to award during the 2010 World Series of Poker Tournament of Champions. The tournament will take place during the 41st Annual WSOP at the Rio. Learn more.

To sweeten the pot, ESPN will air the event in a special two-hour telecast on Aug. 3.

Known as "pocket aces," this poker hand has been known to make grown men weep tears of joy.

Just 27 players will participate in the World Series of Poker Tournament of Champions, with 20 players selected by voting from the public. Voting will remain open until Jun. 15.

To qualify as one of the 20 eligible fan-voted participants, players must be a WSOP bracelet-holder. All living WSOP bracelet holders are able to receive votes, and currently there are 521 eligible players.

The three previous WSOP Tournament of Champions winners gain automatic entry, plus the reigning WSOP champion and the reigning WSOP Europe champion get seats at the table. The five shoo-ins are Annie Duke, Mike Matusow, Mike Sexton, Joe Cada and Barry Shulman.

Play will start at the Rio on Jun. 27, and will stop once the final nine players are reached. Those nine return on Jul. 4.

The World Series of Poker runs from May 27 to Jul. 17. Find out more about the world’s premier poker event.

The Holy Grail for poker players, a WSOP bracelet. The Holy Grail was, sadly, not available for a photo.

There truly is something for everyone in Vegas! On Mar. 28, Playboy model (and co-star of the reality series “The Girls Next Door”) Kendra Wilkinson will teach “Stripper 101″ at the V Theater inside Planet Hollywood. 

Women who sign up for the classes, scheduled for 1:00 p.m. and 3:00 p.m., may be featured on Wilkinson’s E! Television reality show, “Kendra,” as well as E! Entertainment News. 

It's the Kendra Sport Pole! No, seriously. It's a sport.

A special “Kendra Package” includes cocktails, the “Stripper 101 Ruby Package” (class for one, official Stripper 101 license, souvenir photo and T-shirt, etc.), nightclub passes, tickets to “American Storm” or the Marc Savard comedy-hypnosis show and the Kendra Sport Pole to take home, all for $249. 

Space is limited. Find out more, limber up and we’ll see you at Planet Hollywood! Call (702) 318-6464 for information and tickets.

You know it’s serious if there’s an “izzle” involved.

Flamingo just announced rooms for just $25, for 25 selected days, Mar. 28 through May 6. We don’t know all the details, because who has time for this “reading” thing, but you might want to check it out. “Think pink,” and book before it’s too late.

This photo has nothing to do with this "25 days/25 dollars" offer, but we thought it looked cool. Oh, and it's at the Flamingo. So, it's related. Kind of.

And you’re arriving when?

Bonus factoid: The Eiffel Tower in Vegas is 541 feet tall. We don't do metric.

Stay and play at Paris Las Vegas, dine at the Eiffel Tower Restaurant or take in the Eiffel Tower Ride.

Here’s today’s sweet temptation from Payard Pâtisserie & Bistro at Caesars Palace. This little baby is the Pont Neuf, which in French means, “My gawd, hold me back!” Or something like that.

The Pont Neuf features chocolate mousse, chocolate sauce and hazelnut brownie.

Honestly, no visit to Las Vegas is complete without a visit to this award-winning restaurant and pastry/chocolate shop at Caesars Palace. Learn more, if you dare.

Even if nobody’s actually died from the phenomenon known as “brain freeze,” there are moments when it sure feels like you might.

When it comes to providing epic brain freezes, Vegas is the undisputed king! From margaritas to daiquiris and myriad exotic frozen concoctions served up in Sin City’s world-class bars and lounges, Las Vegas keeps the brain freezes coming fast and furious.

Daiquiris. The source of so much pleasure (and the occasional pain).

We experienced a near-death brain freeze incident just the other night at Evening Call, a new specialty drink store inside Bally’s Las Vegas. This new shop (open a mere five hours when we wandered in) serves up mouth-watering beverages with names like Wake Up Call, Vegas Crush, Jager Bomb, Call Girlz, Coco Loco and Straw Bama.

Bottoms up!

Owner Tommy and Brain Freeze Facilitation Specialist (not her real title) Sophia were on hand to comfort those suffering from brain freeze symptoms brought on by the ice-cold, flavorful refreshments at Evening Call. And to point and laugh. But mostly to comfort.

Some jobs are just more fun than others.

Once we recovered from our unprecedented level of bliss/agony, we felt compelled to explore further the whole brain freeze realm.

First, the medical name for “brain freeze” is “sphenopalatine ganglioneuralgia.” Say that five times fast!

What causes brain freeze? When something cold touches the roof of the mouth (palate), a nerve response causes a sudden dilation and swelling of blood vessels, sending pain signals to the brain via the trigeminal nerve, resulting in severe pain in the forehead. And no, we did not just copy and paste that from medical textbook.

So, how does one avoid brain freeze? (Other than by not drinking cold drinks, of course. But let’s be realistic. It’s Vegas!) A common bit of advice says to drink slowly, and you may even want to pause between sips to let your mouth warm up.

Another tip: When you drink a cold drink, do it so it doesn’t touch the roof of your mouth.

Once a brain freeze starts, there are a few things you can attempt to make it subside. Here are four popular methods: 1) Touch your tongue to the roof of your mouth. 2) Drink something warm. 3) Press your thumb to the roof of your mouth. 4) Raise the temperature in your mouth by creating a mask over your mouth with your hand and breathing rapidly. Find out more.

So many ways to bring on the brain freeze, and so few ways to avoid them.

Bonus factoid: About 30% of humans suffer from brain freeze.

Extra bonus factoid: Giving yourself a brain freeze can actually help alleviate a headache.

Read about brain freeze in the British Medical Journal.

What’s your favorite spot to get a brain freeze in Las Vegas? Let us know in the Comments section!

Oh, and on a related note. Can you admit you have a little Vegas Crush? We do!

Our favorite beverage name. EVER.

We have a suggestion. After a night out on the town in Las Vegas, how about the gargantuan ”Andy’s Sage Fried Chicken & Bacon Waffle Tower” at Hash House a Go Go at Imperial Palace?

Bring your appetite. In fact, bring three.

Dining at Hash House a Go Go is more than grabbing a bite, it’s an experience. Learn more.

Singer Matt Goss kicked off his new gig in style on Mar. 12 at Caesars Palace. Goss and friends hit the red carpet before his much-anticipated first show at The Gossy Room at Cleopatra’s Barge.

Matt Goss works the red carpet.

Celebrity guests at the show included recording artists Mel B, Natasha Bedingfield and Leona Lewis. Reality star Laura Croft was on-hand to support Matt Goss, too.

Harrah's headliner Rita Rudner was cracking them up on the red carpet.

Aside from comedian Rita Rudner (pictured above), Las Vegas favorite and Divas Las Vegas star Frank Marino (Imperial Palace) made an appearance.

A bit of Matt Goss trivia for the ages: His very first song on the stage at Caesars Palace was Stevie Wonder’s “Superstition.”

The "Evil" martini (similar to a strawberry martini, but cooler) was on just about every tabletop at the debut event.

The guest list continued with Mrs. Nevada 2009 (April Schwartz) and Mrs. Las Vegas 2010 (Steph Mackenzie), below.

We spotted this duo with our keen photojournalistic eye in the casino at Caesars Palace.

While the red carpet was certainly glitzy, nothing could compare to the electricity onstage when Matt Goss and his band, as well as his phalanx of scantily-clad dancers, took to the stage, surpassing all expectations for this buzz-worthy new show on the Strip.

Matt Goss rocks the boat at the famed Cleopatra's Barge at Caesars Palace.

See Matt Goss live at Caesars Palace. Enjoy our exclusive gallery of photos from Matt Goss’ big night.

From what we hear, Las Vegas has a new animal attraction on the horizon, the Exotic Animal Encounter.

The folks behind the Cloud Nine sightseeing balloon rides expect to add an animal park to their take-off site at the south end of the Las Vegas Strip. Find out more.

We have no idea if goats are considered "exotic," but it was the only photo we could find on short notice.

Bestselling author and Food Network star, Giada De Laurentiis, will autograph her new cookbook “Giada at Home: Family Recipes from Italy and California,” and greet fans, at Sur La Table inside the Miracle Mile Shops at Planet Hollywood on Apr. 5 at 5:00 p.m.

Bonus trivia: Giada is a a self-proclaimed chocoholic.

Fans need to have a ticket to gain access to the meet-and-greet. Tickets can be obtained by purchasing a copy of “Giada at Home: Family Recipes from Italy and California” at Sur La Table’s Miracle Mile Shops location any time between now and Apr. 5.

No, we don’t get a piece of this action, we just have to share it. These T-shirts are inspired by “The Hangover,” of course, one of the best advertisements for Las Vegas and Caesars Palace in the history of movies, ever.

Just because it's wrong doesn't mean it's not funny.

Oh, and we understand you get get 10% off if you use the promo code “HANGOV.” Buy one, if you must, but we don’t have to condone it.

That’s right, we said it, “frenzy.” Here’s all the Vegas news that’s fit to print. And some that isn’t.

• Penn, of Penn & Teller talks about turning 55. You can see Penn & Teller live at Rio Las Vegas.

• Zach Galifianakis (say that five times fast), burly star of “Hangover,” will get the “Comedy Star of the Year” award at ShoWest in Las Vegas. ShoWest happens at Bally’s and Paris, Mar. 15-18. Find out more.

Bonus trivia: Key sequences of "The Hangover" were shot at Caesars Palace.

• Las Vegas’ Buca di Beppo restaurant is serving up free spaghetti on Mar. 15. The address is 7690 West Lake Mead Boulevard, Las Vegas.

• Turns out that Vegas hotel rooms are the nation’s most affordable. And you’re waiting for what to book one?

• ”Pawn Stars,” set in Las Vegas, has become a huge hit on the History Channel. Read more.

• Here’s a fine article about the third anniversary of “X Burlesque” at Flamingo Las Vegas.

They go through a lot of mops at "X Burlesque."

• No, your vision isn’t going. Las Vegas Strip casinos are set to go dark for Earth Hour, Mar. 27. The Strip will go dark at 8:30 p.m. Las Vegas time.

• What’s new with the Pussycat Dolls? Here’s what.

• More than 70% of Vegas hotels have Twitter accounts. Here’s a handy list.

• Two Pulse of Vegas (Harrah’s Entertainment) resorts have received recognition for their waste-cutting efforts, Bally’s and Paris. Good going! Read more.

• PBR Rock Bar is slated to move into the space previously occupied by Hawaiian Tropic Zone in the Miracle Mile Shops at Planet Hollywood. Learn more.

St. Patrick’s Day is just around the corner (Mar. 17), so it’s a great time to reminisce about one of our favorite charactes on the Strip, Lucky the O’Sheas leprechaun. Last year, Lucky was given the key to the city by Mayor Oscar Goodman. Take a look at this video that chronicles his adventures that day.

When it comes to casino mascots, the others just come up short.

The O’Sheas page on Facebook has all the details about events and specials for St. Patrick’s Day. Go now.

O’Sheas will host a four-day long block party celebration, kicked off by “Peepshow” star Holly Madison. She and Lucky will go head-to-head in a beer pong match sure to be a battle for the ages.

Beer pong is to O'Sheas as sequins are to showgirls. Or something.

The block party at O’Sheas will feature the requisite drink specials, live entertainment, a hotdog-eating contest and all-day water balloon games, beer pong and more. Free swag will be flowing as voluminously as the green beer, with T-shirts, drinks and show tickets being given out throughout the course of the festivities.

What would St. Patrick’s Day be without drink specials galore? They’ll include $.99 frozen Baileys, $3 Irish Car Bombs, $3 Miller/Coors green beer, $3 Miller/Coors draft, $4 Guinness draft, and tons more.

Don’t miss the St. Patrick’s Day shenanigans at O’Sheas, in the center of all the action on the Las Vegas Strip.