Jon Stewart closed out Tuesday night’s episode of The Daily Show with the major announcement that he will be retiring from the show — after an amazing run of 17 years — then showed a nice video of a monkey giving a cat a bath.

Jimmy Kimmel had a special feature: “The Collected Wisdom of Pat Robertson.”

Conan O’Brien hosted physicist and TV host Brian Cox, who discussed his public feud with self-help guru Deepak Chopra over the issue of scientific facts.

And David Letterman got in his punches at the Brian Williams scandal, with a special “Top Ten” of other things Williams has said that might not be true — such as, “It’s a thrill to be on your show, Dave.”