Barry Diller riding his bike around town yesterday ... Rachel Weisz walking in the East Village ... Mario Batali hanging out with son Benno in the Village ... Dustin Hoffman and his daughter shopping in Soho ...Tobey Maguire pushing daughter Ruby in a stroller down Fifth Avenue ... Brad Pitt taking Pax and Maddox to lunch at Mars 2112 in Times Square ... Russell Brand shopping in SoHo ... Joshua Jackson and Diane Kruger walking downtown ... Hugh Jackman tossing around a ball in the Village ... Robert Redford and Sibylle Szaggars shopping on Madison Avenue ... Angelina Jolie shooting scenes for Salt outside St. Barth's Church on Park ... Fergie leaving a building in Midtown ... Taylor Momsen standing on the set of Gossip Girl ... Alec Baldwin leaving the Waverly Inn ... and Rihanna, Jay-Z, Beyonce and Brandy going to dinner at the Spotted Pig.