the best sketch of all time?

Last night, Damien and I sat down with Lourenço Barsi-Gomes, who is currently creating some Clowning Around promos for us. We started talking clowns and comedy in general, as I recounted my bizarre bus ride to meet them, which included a bag of roast chicken, some very long sports socks and a threat to knock someone's head off (I would like to point out I was an observer rather than actually being involved).

On the way home I began thinking of the great comic sketches. And for me, this Abbott and Costello standard wins every time. What do people think?