Late Night host David Letterman had already put on a suit covered in Alka-Seltzers and lowered himself into a vat of water.

I’ve watched more of David Letterman’s late-night show during the May sweeps than I have in years and learned one valuable lesson before tonight’s finale on CBS. If you’re going to DVR the finale ...

Letterman TV, David Letterman’s exclusive 24/7 TV channel available only on Samsung TV Plus, will begin airing content from over 1,800 episodes of NBC’s fam ...