David Letterman

He knows Stern as a "completely different guy" today.

Get ready to go down a classic comedy rabbit hole.

These interviewers were so out of pocket.

After 33 years David Letterman wake's up this morning with nothing to do.  He's been hosting Late Night for over 3 decades, but did you know before Dave hosted Late Night, he was a radio DJ and also a television weatherman?

There were no scheduled guests on the final episode of The Late Show With David Letterman (minus The Foo Fighters, who closed out the night with a performance of “Everlong”), but that didn’t mean that a few of Letterman’s old friends didn’t stop by to say goodbye one last time. Some of the funniest people alive all came together to present one final Top Ten list, Things I've Always Wanted to Say To Dave.

Here is a brief list of things that happened during Jennifer Lawrence's appearance on 'The Late Show' last night: she sang with host David Letterman, the duo discussed tummy troubles, they chatted about bowling, they both totally biffed introducing a clip, Lawrence begged Letterman to not retire, they walked out during a live taping, and then Lawrence took over the entire show.