David Letterman

'Late Show' host David Letterman shocked fans when he announced his retirement during his opening monologue on tonight's taped episode of the 'Late Show With David Letterman.'

During a taping of tonight's 'Late Show', host David Letterman announced to a shocked studio audience that he would be retiring in 2015 after his latest contract ends.

Two titans of comedy switched roles and the results were gut-busting.

A couple of nights ago, Will Smith stopped by David Letterman's 'Late Show' to promote his newest film 'After Earth.' But before he did, the one-time Fresh Prince delivered an impromptu summer jam.

Olympian Ryan Lochte is continuing his tour of inanity to promote his reality show (in which he apparently doesn't understand irony or douchebaggery). And last night, David Letterman asked him to explain just why he has a reality show in the first place.

David Letterman pulled zero punches when forced to interview Lindsay Lohan for 'The Late Show' last night (April 9), making the starlet visibly uncomfortable at certain points. Thing is, Letterman's so affable that it was hard for her to stay mad at him.

After a six-year dry spell, Lindsay Lohan will end an apparent Letterman prohibition by appearing on 'The Late Show with David Letterman' on Tuesday, Apr. 9.

Back in February, Shia LaBeouf and Alec Baldwin allegedly had “creative differences” over their Broadway play 'Orphans,' which had Shia quitting and then sharing confusing and very personal emails about the entire situation on Twitter. But last night, Apr. 1, LaBeouf went on 'Late Night With David Letterman' and actually tried to make sense of it all. Sort of.