I'm still fondest of The Beast with a Billion Backs simply because Fry as Space Pope is the best thing ever. But yeah, Penn commentating on celebrity poker is excellent.

(My favorite Penn & Teller moment was on Babylon 5, when Teller "speaks" through a little beepy machine. At the beginning of the episode, someone asks him why he does something; at the end, he leans over and whispers something into Sheridan's ear and walks away. "What did he say?" "... He said, 'because it tells me to'.")