He made guest appearances on Beverly Hills, 90210, Diagnosis: Murder, NYPD Blue and Crossing Jordan. St. Patrick landed the role of Keith Charles in the HBO series Six Feet Under in 2001, portraying a gay black man in an interracial relationship with David Fisher (Michael C. Hall). Alongside his Six Feet Under cast members, St. Patrick was nominated five consecutive times for the Screen Actors Guild Award for Outstanding Performance by an Ensemble in a Drama Series (2001−05), winning the award in 2002 and 2003. St. Patrick continued playing Keith until the series ended in 2005.
