Jessica Alba is set to guest star in the upcoming post Super Bowl episode of "The Office."

In one plot of the special post Super Bowl episode of "The Office," some of the office workers try to secretly watch a bootlegged Hollywood movie during the workday. Alba and comedic actor Jack Black will play characters in the bootleg movie.

The special hour-long episode titled "Stress Relief" will premiere immediately following "Super Bowl XLIII" Sunday, February 1 (10:30-11:30 p.m. ET; simultaneously to all time zones) on NBC. Season five of the Emmy-Award winning series will continue airing in its regular time slot; Thursdays (9-9:30 p.m. ET/PT) on NBC.