Best known as Josh Lyman on the series The West Wing, for which he won an Emmy Award, he is also notable for roles in Studio 60 on the Sunset Strip, The Mentalist, and ABC's Trophy Wife. Additionally, he played Adam Sandler's enemy in the film Billy Madison.
He was in one episode of the series, The Equalizer and made his film debut in Doorman.
He was responsible for writing two episodes of The West Wing.
He was in the horror flick, The Cabin in the Woods, which starred Chris Hemsworth.