Widely known as crazed druggie and fictional director Billy Walsh on the HBO hit comedy series Entourage.
He debuted as a guest star in 2003 in the role of Zorbo on the show One on One.
He appeared in the seventh season of 24 in a regular role as FBI Agent Sean Hillinger.
He married director Kat Coiro and grew up with two siblings.
He appeared alongside Will Forte in the film MacGruber.