The kerfuffle at NBC always had a clear victim in Conan O’Brien, but last night David Letterman and Craig Ferguson found a pretty convincing villain: Jeff Zucker. Conan managed to bring out Ricky Gervais’s motherly side on his show, while Stephen Colbert learned some shocking gossip by reading John Heilemann’s new book. Also, Leno makes an obligatory NBC joke. Watch our compilation to see what you missed.