Mathew St. Patrick (born March 17, 1968) is an American actor. He is best known for his portrayal of Keith Charles on the HBO drama television series Six Feet Under. He was born and raised in Philadelphia and graduated from Olney High School. St. Patrick has starred as Detective Marcus Taggert on General Hospital (1997), and as Adrian Sword on All My Children (1998–2000). He was the first voice of Skulker (2004) on Danny Phantom and starred as the principal detective in the Fox fall drama, Reunion (2005). He played Seth in the 2008 science fiction horror film Alien Raiders. He recently played the part of an FBI agent in the film War. St. Patrick recently appeared on the Eminem album Relapse in the skit Mr. Mathers.