Even brands are mourning the loss of America’s favorite late-night creep (joke! maybe). Never one to be left out of a social media wave, Beef’n Cheddar outpost Arby’s posted this tweet late Wednesday night, at the start of Letterman’s final show:

Jon Stewart swung by Late Night with David Letterman and naturally the topic turned to politics. During the discussion, Stewart explained exactly what it is that the GOP doesn't like about Mitt Romney: he's trying to be Rick Santorum and failing miserably.

Tonight David Letterman celebrates 30 years on the air. It's been quite a ride for old Dave, through different timeslots and networks, from the peak of zeitgeist to something else entirely. He's hosted starlets and politicians, often treating them with a dash of anger and more than a bit of sarcasm. Here are some of the most memorable moments from his time on television.

David Letterman celebrates 30 years in late-night television tonight. Chances are, though, that you aren't gonna be watching the anniversary episode—especially if you're under the age of 50. It's been a long, long time since David Letterman mattered all that much.

Producers at Late Night with David Letterman got a call from a "friend" of Lindsay Lohan and booked her to appear on the show on Thursday through this intermediary. Too bad the "friend" was a fake and LiLo won't be on after all.

Nobody misses The Late Night Wars more than Jimmy Kimmel and David Letterman. In addition to allowing them to openly mock Jay Leno, it was a big boost to their ratings. And Kimmel's having a hard time letting it go.