During his stint on the show, Carell was constantly described as the glue that held 'The Office' cast together--on screen and off. Critics and audiences alike are eager to see if the sitcom can continue to work without its most billable star.

Carell wasn't always this well known. When he took the gig as Michael Scott, manager of Dunder Mifflin's Scranton office, he was known only to die-hard 'The Daily Show' fans. Fast-forward six years and he's one of the most sought after comedic actors in Hollywood. And as EW.com points out, he became a mega-movie star without even taking a break from his regular gig at Dunder Mifflin.