David Letterman and Bill O'Reilly have had some memorable exchanges in the past, and last night's visit by O'Reilly to The Late Show certainly followed suit.
In fact, it took two minutes for Letterman to point-blank call him a goon.
Letterman, who warmed our hearts when he got married to his longtime partner Regina Lasko last month, is certainly not losing touch with his cranky side.
Accusing Bill O'Reilly of being "too smart to say the things he says," cutting him off frequently and telling him he's not that entertaining (or a journalist), Dave showed his lack of tolerance for people he deems self-important and unfunny.
For his part, Bill wasn't exactly backing down. The result was a tense interview that ofen turned more bitter than comedic, but was certainly entertaining: