Jimmy Fallon and Jerry SeinfeldJerry Seinfeld appeared on 'Late Night With Jimmy Fallon' and the star relived an episode of 'Saturday Night Live' where he and Fallon tried to out 'Seinfeld' each other -- playing the clip from a 'Celebrity Jeopardy' sketch.

Fallon admitted that imitating his guest was "a big part of my act."

Then, Jerry and Jimmy each do their own impersonations of the iconic 'Seinfeld' character. Watch It Happen

Fallon and Seinfeld Impersonate Seinfeld