Kelly Ripa jogging in Central Park ... John Mayer pulling up to the Bowery Hotel in his Porsche Cayenne ... Natalie Portman sitting down on the set of her new film ... Leighton Meester on the set of a new ad campaign for Reebok ... Philip Seymour Hoffman walking home after having brunch in SoHo ... Russell Brand leaving the Four Seasons hotel on East 57th Street ... Salma Hayek and daugher Valentina standing on the set of 30 Rock ... Debra Messing walking down Madison Avenue ... Katie Holmes leaving her apartment in the East Village ... Jessica Alba filming scenes for her new movie in the Bronx ... and Justin Timberlake arriving at Dos Caminos for the SNL afterparty, which Jennifer Aniston attended, too.