Jerry Seinfeld, Billy Crystal Perform ‘Who’s on First?’ Sequel With Jimmy Fallon on ‘Late Night’ (Video)

Bud Abbott and Lou Costello might have perfected their unforgettable “Who’s on First?” comedy routine, but some of comedy’s contemporary All-Stars have done their best to improve on it.

Billy Crystal and Jerry Seinfeld appeared on NBC’s Late Night to perform an updated “sequel” to the bit with host Jimmy Fallon. Check it out in the video below.