Wednesday

Caught in the Act!

10/03/2007 at 06:00 AM EDT

• Claire Danes and British beau Hugh Dancy, strolling together in New York City after a joint trip to the gym. The actress is currently starring in a Broadway production of Pygmalion.

• Katherine Heigl, dining a deux with close pal (and costar) T.R. Knight at Japanese restaurant R23 in downtown Los Angeles. Looking like "best friends," the two ordered a lot of sushi, served on the restaurant's hand-painted boards. And, an onlooker tells us, "they laughed and talked for quite a while" before heading out.

• A nearly unrecognizable Sacha Baron Cohen – sporting a full beard, hat and glasses – hit up the concession stand at the Arclight Hollywood. The funnyman ordered a hot dog – light on the ketchup –before heading into his movie with his British male pal. Also at the movies: Anna Faris, sipping Irish coffee with a male friend in the cinema's lounge area.

• Matthew Broderick, feting the 100th birthday of New York landmark the Plaza, during a rooftop party complete with fireworks. Also at the bash: Martha Stewart, who fondly recalled having drinks at the hotel's Trader Vic's during her college days.

• Justin Timberlake, still going strong with Jessica Biel during a dinner at Morton’s The Steakhouse in Toronto. According to a source, the two were very affectionate over filets and vegetable sides.

David Arquette

Jeff Vespa / WireImage

• Courteney Cox Arquette and hubby David, sharing a family day with daughter Coco, 3 (in star-shaped sunglasses), at Kinerase’s CelEBration on the Pier in Santa Monica. Sure, it was a charitable event (benefiting research for epidermolysis bullosa, a rare skin disease), but Arquette was especially generous with his participation. The actor – in only a shirt and boxers –took a seat in a dunk tank and teased, "What's the matter with you people? It's getting hot up here!" Sister Patricia Arquette and his niece, Harlow, 4, took the bait, dunking the actor – twice! Meanwhile, other family-oriented celebs, like Adam Sandler, Kate Beckinsale and Noah Wyle milled around at the carnival with their tots.

• By JENNIFER GARCIA, SCOTT HUVER, JEFFREY SLONIM and MICHELLE TAN

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