Known best for his teenage role as Mitch Taylor in the comedy movie Real Genius, Jarret also appeared in The Karate Kid: Part III and in episodes of Party of Five and L.A. Law.
He made his screen debut at the age of ten in the Paramount Pictures comedy film Going Ape!
He acted in the 2003 West Wing episode "Guns Not Butter."
Born Gabriel Kronsberg, he grew up in Los Angeles, California.
He and Val Kilmer co-starred in Real Genius.