NBC will leave no stunt unplayed in its attempt to own Super Bowl Sunday, with Jessica Alba and Cloris Leachman now confirmed to appear alongside Jack Black in that night's special hour-long Office episode.

The three stars reportedly filmed their appearances today, all of which are featured in a bootlegged Hollywood movie that the Dunder-Mifflin staff attempts to watch during the workday. Few other details are known beyond the high likelihood that ABC's counterattack will still probably win Feb. 1 on the sure-fire appeal of its 2008 hit Inbred Obstacle Course All-Stars: Breasts Edition. Expect guest-star firings by Ben Silverman just for the sake of it.