S3, E14: Oscar (Oscar Nuñez) returns from his long vacation with mixed emotions on whether or not he still wants to be a part of the office. Meanwhile, Andy (guest star Ed Helms) takes advantage of recent events to get closer to Michael (Golden Globe winner Steve Carell). Jim (John Krasinski) turns to Karen (guest star Rashida Jones) and Pam (Jenna Fischer) for help to stage a prank on a new target. Rainn Wilson, B.J. Novak, Brian Baumgartner, Angela Kinsey, Kate Flannery, Phyllis Smith, Leslie David Baker, Creed Bratton, Paul Lieberstein and Mindy Kaling also star.