"Half-Wit" is the fifteenth episode of the third season of House and premiered on the FOX network on March 6, 2007. Grammy-winning singer/songwriter Dave Matthews guest stars in the episode as Patrick, a savant and piano prodigy who comes under the care of Dr. House (Hugh Laurie) for a rare movement disorder. Dr. House also is suspected to have cancer by his staff. Also appearing is Kurtwood Smith. The episode marks the directorial debut of executive producer Katie Jacobs.