In 2000, Patrick appeared in three episodes of "The Sopranos" ("The Happy Wanderer", "Bust Out" and "Funhouse") as David "Davey" Scatino, a store owner struggling with gambling debts owed to Richie Aprile and Tony Soprano. Four years later, he made a guest appearance in the pilot episodes for Sci-Fi Channel's original series "Stargate Atlantis", "Rising", as the military component commander of the Atlantis expedition, Marshall Sumner. He accepted the role, since he had worked with the same crew on "The Outer Limits", a series which he appeared in during the early 1990s.