Robert Lawrence Leonard (born 28 February 1969), known by his stage name Robert Sean Leonard, is an American actor. He is best known for playing Dr. James Wilson in the television series "House" (2004–2012) and Neil Perry in the film "Dead Poets Society". Leonard won a Tony Award for Best Featured Actor in a Play for his performance in "The Invention of Love" in 2001. His other theater credits include "Candida", "Long Day's Journey Into Night", "Breaking the Code", "The Speed of Darkness", "Philadelphia, Here I Come!", "Arcadia", "The Music Man", "Born Yesterday", and "To Kill a Mockingbird".