NBC has renewed its US sitcoms \"The Office,\" \"Parks & Recreation\" and \"Up All Night,\" EW.com reported Friday. Also set to return for the 2012-2013 television season are \"Community\" and \"30 Rock.\" \"The Office\" is the oldest and highest rated of the renewed shows. It wrapped up its eighth season this week. Although cast members Mindy Kaling and James Spader are leaving the show, series regulars Jenna Fischer, John Krasinski and Ed Helms are expected to return next season, EW.com said.