House Wiki

Frank Joseph Whaley is an American actor, writer and director, whose best known work is in independently produced films. On House, M.D., he portrayed the "Mirror Patient", Mr. X in the Season 4 episode Mirror Mirror.

Whaley has an impressive resume with featured roles in Ironweed, Field of Dreams, The Doors, Career Opportunities, Swing Kids, Fatal Deception: Mrs. Lee Harvey Oswald, Pulp Fiction, Swimming With Sharks, Broken Arrow, Red Dragon, The Dead Zone, School of Rock, Mrs. Harris, World Trade Center, The Hottest State, and Vacancy. Watch for him in 2011 in Thicker.

Frank Whaley at IMDB

Frank Whaley at Wikipedia

Frank Whaley at the Off-Broadway Database