Jarret's first film was Going Ape! in 1981. Arguably his most notable appearance was as Mitch Taylor alongside Val Kilmer's Chris Knight in the movie Real Genius. Other film roles include The Karate Kid Part III, Apollo 13, and Last Days. Jarret also made television guest appearances in such shows as 21 Jump Street, L.A. Law, Party of Five, and The West Wing.

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