One man who has been suspiciously quiet about the never-ending battle over NBC's late night lineup is David Letterman. Sure he's mentioned it here and there in a monologue joke or a fake commercial, but he hasn't really let loose with the kind of spittle flying tirade that makes television worth watching.

Last night, the levee finally broke and Letterman's true feelings flowed out of him like a fine, smooth wine in a box with a wide mouth spout. No one was safe, not even Late Night host Lonnie Donnegan.