Caught in the Act!

Originally posted Friday November 30, 2007 06:00 AM EST

Milo Ventimiglia and Hayden Panettiere Photo by: WENN

• Hayden Panettiere and her Heroes costar Milo Ventimiglia, spending a night out together to support their castmate Adrian Pasdar. The two took in his Civil War-era musical Atlanta at the Geffen Playhouse in Los Angeles. After the show, the Heroes castmembers celebrated at a bash attended by Pasdar, his wife Natalie Maines and Leonard Roberts, an actor on the NBC show and a costar in Pasdar's play.

• Ashley Olsen, sitting up front and clapping during a burlesque show at a Calvin Klein party feting New York's New Museum. As Olsen watched the racy act, which featured stripping, she got special attention – the dancer's unmentionables landed right on her table. Also at the party: Maggie Gyllenhaal, Julianne Moore and Lance Armstrong (though no word if he had any face time with Ashley!).

• Earlier, Lance Armstrong lunched at Michael's in New York City. The Tour de France winner sported a power suit and his signature Livestrong bracelet, looking really lean, an onlooker tells us.

• Benicio Del Toro, dining with five friends at Miami's Blue Door at Delano. The group laughed over several bottles of Merlot, finishing their four-hour meal with some drinks and dessert – specifically the coco banana rolls.

Nicollette Sheridan Photo by: Flynet

• Desperate Housewife Nicollette Sheridan, pointing in amazement with her pal as pro-skater Shaun White hit the massive skate ramp outside the Burton Snowboards and Channel Islands Surfboards flagship store in Los Angeles. Inside the store launch party, Kelly Slater patiently waited as a female friend tried on some of the Burton gear.

• Black Eyed Peas member apl.de.ap, celebrating his 33rd birthday at the Peapod Foundation’s Allan Pineda Lindo benefit bash at Vanguard Hollywood. While Fergie wasn't there in person, the singer recorded a video serenading her bandmate with "Happy Birthday."

• By DIANE CLEHANE, JENNIFER GARCIA, ALONDRA HERNANDEZ, LESLEY MESSER and JEFFREY SLONIM

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