Abbott and Costello performed "Who's on First?" numerous times in their careers, rarely performing it exactly the same way twice. They did the routine for President Franklin Roosevelt several times. An abridged version was featured in the team's 1940 film debut, One Night in the Tropics. The duo reprised the bit in their 1945 film The Naughty Nineties, and it is that longer version which is considered their finest recorded rendition. They also performed "Who's on First?" numerous times on radio and television (notably in The Abbott and Costello Show episode "The Actor's Home", widely considered the definitive version, which is shown here).
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