Season 4 Episode 6: Michael and Dwight try to play a prank on Karen, who is now manager of the Utica branch, after she tries to steal Stanley from the Scranton office. Meanwhile, Pam, Toby, and Oscar start their own exclusive office book club.
I haven't been able to get my grubby hands on a full episode, but here are the JAM scenes. You may not want to watch these if you haven't scene the full episode.