ZACH & MANDY: HAPPY CAMPERS
Despite rumors that they've split, Scrubs star Zach Braff and Mandy Moore made quite a cozy couple last weekend in the Catskills, where they celebrated the 30th anniversary of Stagedoor Manor, a theater camp that Braff, 30, and Moore, 21, attended separately as kids. Arriving together July 23, the pair held hands throughout the reunion weekend (Jon Cryer and Josh Charles also dropped by), visiting classes and hunting for old snapshots of each other in the camp's photo collages. "Zach constantly referred to Mandy as his girlfriend," says a source. "They went everywhere together." Including the stage: At Sunday's gala dinner, Braff joked about their age difference before he and Moore regaled the audience with tales of their camp experiences. Neither of their reps would comment on their relationship.

GETTING IN THE MOOD
With Ashley Olsen, John Stamos and Bob Saget relaxing together July 20 at Mood, the Hollywood club's hugely popular—but very exclusive—Wednesday night bash became more of a Full House. Open since May, the club boasts midweek regulars from Lindsay Lohan to Jay-Z, and select VIPs get mood rings, assuring instant entry and a great table no matter how many former sitcom stars are inside. Also at the Hollywood hot spot July 20: Ashlee Simpson, Nicky Hilton and The O.C. costars Rachel Bilson and Mischa Barton, who ordered her driver to keep the limo door shut until she was done primping so that she could face the ever-present paparazzi at Mood's front door.

B-DAY FUN IN SPADES
David Spade turned his 41st birthday into a two-day fun fest, first partying with guests such as Bruce Willis, Kevin Connolly and Jenny McCarthy July 22 at Hollywood's Tropicana Bar, where turkey sandwiches and Jack Daniel's were served in Spade's private cabana. The next night at Santa Monica's Buffalo Club, Demi Moore and Ashton Kutcher, Teri Hatcher, Jim Carrey, Owen Wilson and Gov. Arnold Schwarzenegger joined the comic for karaoke and crab cakes. Says Spade of the A-list turnout: "I like to think it's because I'm a cool guy. But maybe they just don't want to be made fun of." If guests really were worried about Spade's new celebrity-skewering series The Showbiz Show, on Comedy Central, the bribes certainly weren't pouring in: Demi, Ashton and her kids gave the birthday boy a card with a single dollar bill inside.

SPEAKING OF DEMI & ASHTON...
The pair spent most of Spade's bash in one spot, briefly chatting with Moore's ex Bruce Willis, while daughters Rumer, 16, and Scout, 14, mingled. "[Demi and Ashton] had a great time watching them," says a guest, adding that Rumer's karaoke turn "floored the audience." The next day, Demi and the girls had a blast at a baby shower for Moore's pal, Punky Brewster's Soleil Moon Frye (Frye's husband Jason Goldberg is Kutcher's producing partner), decorating onesies and eating comfort food.

PARTY HOPPING

40/40 CLUB, N.Y.C., July 25 With boyfriend Jay-Z at his joint to ring in Yankee third baseman Alex Rodriguez's 30th birthday, Beyoncé holds a cigarette but doesn't smoke it." have no interest in smoking. I just want to see how it's done," she says....

ROCK CANDY, N.Y.C., July 23 All five Wayans brothers—Keenen Ivory, Dwayne, Damon, Marlon and Shawn—arrive at 1:15 a.m. to celebrate Marlon's 33rd birthday. Over the next couple of hours, they drop $1,500 on drinks while dancing with various girls....

CHATEAU MARMONT, LOS ANGELES, July 20 Jessica Simpson smooches husband Nick Lachey while sitting on his lap at the outdoor bar.

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