The Office dreamboat and new Blackberry spokesperson John Krasinski joined Aimee Mann on stage the other night for duet of "Winter Wonderland," for some reason, and someone in the audience caught it on tape. It's pretty cute: [videoembed size="full_width" alignment="center"][/videoembed] If you're involved in comedy in Los Angeles, are you legally required to be BFF with Aimee Mann?