Natalie Portman arriving at the Broadhurst Theatre for opening night of Hamlet ... Liev Schreiber and Naomi Watts riding a scooter downtown ... Blake Lively arriving on the Gossip Girl set in Tribeca ... and Ed Westwick shooting scenes in Central Park ... America's No. 1 dad, Jon Gosselin, shopping on the Upper West Side ... Hugh Jackman carrying his kids' scooters in the West Village ... Pete Wentz standing in front of his hotel in Midtown ... Hilary Duff arriving at Silvercup Studios in Queens ... Khloe Kardashian arriving at JFK to catch a flight back to LA ... Sienna Miller partying at a club and signing autographs ... and Michael Douglas and Shia LaBeouf filming scenes for Wall Street 2 at the Central Park Zoo.