Jerry Seinfeld Makes Cameo in ‘Late Night’ Abbott & Costello Homage (Video)

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Jerry Seinfeld delighted the audience of Thursday's edition of Late Night With Jimmy Fallon when he made a surprise cameo in a re-enactment of the famous Abbott & Costello "Who's on First" sketch.

Also in the bit: that night's guest, Billy Crystal; Fallon (as Abbott); and two members of the Late Night staff, announcer Steve Higgins (as Costello) and head writer A.D. Miles.

Watch the shenanigans below.