If hard pressed, I'd say that my favorite fifteen seconds of television comedy is "The Fish Slapping Dance," from Monty Python's Flying Circus. There is something about the combination of silliness and formality in this bit, and most of the Python's stuff, that continues to influence my sense of humor. If this clip is brand new to you, well then, you're welcome. If you already know it, take a look again. It will make you 8% happier today.