Okay, so the point of the Funny Or Die-hosted video "Backlash" isn't gaming-centric, per se, but it does center around various Judd Apatow alum and cast members of Walk Hard: The Dewey Cox Story playing the PlayStation 3 version of Rock Band together. Watch Justin Long sing, Jonah and Hill and Paul Rudd play the strings and Craig Robinson on drums.
The Rock Band focus goes away once they start plugging their various projects, leading Robinson to suddenly realize he's part of a shameless viral marketing campaign and lashes out at Judd Apatow. For fan's of the director-producer's movies, the video is hilarious and we don't want to spoil it, so check it out yourself after the break. (Warning: NSFW)