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Actors You Completely Forgot Were On 'Seinfeld'

List RulesVote up the actors you forgot were on 'Seinfeld' before they became super well-known.

From "Jerry's Girlfriend" to... well, "Jerry's Girlfriend," many famous actors have appeared as guest stars on Seinfeld at one point or another. Some famous guest stars on Seinfeld have played pretty memorable roles, others... not so memorable. You'll have no trouble recognizing them now, but most of these stars were yet to be established when they popped into the world of Seinfeld

Here is a list of actors you completely forgot were on Seinfeld

  • Photo: NBC

    Scott Patterson of Gilmore Girls appeared briefly as Elaine's boyfriend who may or may not be "sponge-worthy."

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  • Photo: NBC

    Mariska Hargitay from Law & Order: Special Victims Unit appeared as Melissa, an actress who auditions for the part of Elaine in the pilot for Jerry.  

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  • Photo: NBC

    James Spader appeared as Jason Hanky, George's friend who refuses to apologize for not lending him a sweater. 

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  • Photo: NBC

    Will & Grace and Parks and Recreation star Megan Mullally played one of the many women to dump George after just one episode.

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