That's why the show was given a prime post-Super Bowl timeslot in February 2009. In fact, the show was given an entire hour for a two-part episode titled "Stress Relief," and it's become one of the funniest and most beloved episodes of the entire series run. But "The Office" was a series set in a grounded reality where having big stars pop up for guest roles went against the grain of the entire series. But the B-plot allows for the show's Super Bowl guest stars to make an appearance. In it, Jack Black plays a man who is engaged to Jessica Alba's character but falls in love with her grandmother, played by Cloris Leachman.