John Krasinski and Emily Blunt hailing a cab around in Chelsea ... Cynthia Nixon running a few errands over the weekend ... Kate Hudson leaving her townhouse with her son Ryder and later walking with a cup of coffee in hand ... Diane Kruger and Joshua Jackson leaving Bubby's on Hudson Street after brunch ... Chelsea Clinton leaving the Time Warner Center on Sunday afternoon ... Goldie Hawn and Kurt Russell walking in Midtown ... Cate Blanchett hailing a cab with her two sons ... Ed Westwick shooting scenes for Gossip Girl on the Upper East Side and later going to lunch with Jessica Szohr ... Ben Roethlisberger getting into a car outside the Mandarin Oriental Hotel ... and John Mayer leaving dinner at Nobu.