By Robin Leach · October 1, 2008 · 7:53 PM

Pure Management Group

Zach Levi, Josh Gomez and Joel David Moore.

* Actor Zachary Levi brought the entire cast of "Chuck" with him to Vegas for his three-day birthday bash. It all began with Zach, Joshua Gomez, Yvonne Strahoovski, Sarah Lancaster, Ryan McPartlin, Scott Krinsky, Marc C. Lawrence and Julia Ling, joined by producers McG and Chris Fedak celebrating the launch of their second season on NBC.

They stretched out in the sun at the Venus topless-optional adult pool club at Caesars Palace sharing a deluxe VIP cabana for dining and drinks. Even boxer Sergio Moira stopped by to check out the action. Then, celebrity pals Amy Adams of "Enchanted," Joel David Moore and JD Nicholas joined their party and they all hit the Pure nightclub at Caesars. Also at Pure was country singer Trent Tomlinson.

Less than 24 hours later, the Hollywood stars hooked up again for Zach’s birthday blast. They started out at the Venus pool club once again with nachos and frozen margaritas, then moved to the LAX nightclub in the Luxor, where Zach was presented with a super-sized silver three-tiered cake. They held court on stage at a VIP table as the entire club joined in a “Happy Birthday” sing-along.

HRH

Nate Mendel and Pat Smear of the Foo Fighters.

* Actor-comedian Drew Carey was at Mr. Lucky’s for dinner in the Hard Rock while nearby at the Wasted Space rock lounge were Foo Fighters musicians Nate Mendel and Pat Smear relaxing after their second sold out show.

* Illusionist Criss Angel partied at LAX with a large group of friends, including Kobra of the Los Angeles-based hip-hop group Boo Ya T.R.I.B.E.

Erik Kabik/Retna

Rachel Smith

* Miss USA 2007 Rachel Smith enjoyed a day of luxury at the Mirage and Bellagio hotels. It began poolside at the Mirage’s topless-optional adult BARE pool lounge and was followed by dinner at Fix restaurant. She then danced until the early morning hours at the Bank nightclub in the Bellagio.

* At the Christian Audigier nightclub in Treasure Island, singing sensation Aubrey O’Day from Danity Kane hosted a sexy soiree. Dressed in a sizzling one-shoulder, navy-blue mini dress, she grabbed the mic and pumped up the crowd, dancing to DJ Cyberkid’s turntable twists, alongside gossip guru Perez Hilton.

* Comedy actor Aries Spears partied at Pure, and actor Joe Pesci, former NBA star Gary Payton and Milwaukee Bucks point guard Damon Jones all partied at LAX. Damon’s group kept its party going until dawn with Patron Platinum tequila and Dom Perignon rose champagne.

Alex Loc Thieu

Xzibit and crew

* At Victor Drai’s Tryst nightclub was rapper Xzibit, who posed with friends for fan photos, and World Wrestling Entertainment star David Batista and Tom Atencio, who owns mixed martial art's Affliction.

* Partying in VIP were "Mean Girls" star Jonathan Bennett, comedian David Spade and Dr. Gary Motykie from E! Entertainment’s "Dr. 90210" TV series.