Jonathan Gries (/ɡraɪz/ GRYZ; born June 17, 1957) is an American actor, writer, and director. He is best known for the role of Uncle Rico in Napoleon Dynamite for which he was nominated for the Independent Spirit Award for Best Supporting Male, and also as recurring characters Roger Linus on Lost and Rusty the Bum on Seinfeld. He is also known for his roles in Martin, The Pretender, The Monster Squad, Running Scared, Real Genius, Dream Corp LLC, and The White Lotus.