With Steve Carell's departure from "The Office" coming four episodes before the finale, funnyman Will Ferrell will join the cast. Ferrell, who said he contacted "The Office's" producers because he wanted to be a part of his friend's final moments on the show, is confirmed for at least one episode after Carrell's exit and possibly more. There's still no word on who will replace Carell's character Michael Scott as head of the Scranton office. And, don't get your hopes up for Ferrell to become the replacement since he's "kind of a big deal," and way too important for a mere television show.