Every night for years, almost without fail, Jimmy Kimmel has ended his show by apologizing to Matt Damon for being bumped – a running gag so long, and so effective, it’s a marathon-running gag. And tonight, now that Kimmel has moved to 11:35 p.m. ET, Damon finally has been booked on the show officially. He’s appeared in viral videos for the show, and appeared in other playful cameos, but this makes it official. Unless the monologue runs long, and Kimmel bumps him.