A founding member of the Malaparte Theater Company, where he spent two years alongside such actors as Ethan Hawke and Robert Sean Leonard, Josh Hamilton has performed on the stage, screen, and television. His notable stage work includes roles in Pirandello's The Joke and in Eric Bogosian's SubUrbia. In 1991, Hamilton earned acclaim for his starring role in the CBS Schoolbreak Special "Abby, My Love," and he subsequently appeared in American Playhouse teleplays and in two CBS Hallmark Hall of Fame specials, including the highly praised "O Pioneers!" Hamilton entered feature films playing small roles in Old Enough and Firstborn (both 1984), but did not appear in any other films until Alive (1993), in which he portrayed a plane crash survivor stranded in the Andes with Ethan Hawke. In 1995, the actor earned greater recognition as one of the stars of Noah Baumbach's Generation X ensemble comedy Kicking and Screaming. Two years later, he earned additional recognition for his starring role as the wacko brother of sociopathic Parker Posey in The House of Yes; he subsequently continued to work largely on television and in various independent films.