He can currently be seen starring as Colonel Tom Ryan in CBS' new hit action-drama The Unit, produced by David Mamet. The show follows a team of America's covert operatives and how their dangerous job affects their lives.

Patrick appeared opposite Harrison Ford in Warner Bros. Firewall. He was also recently seen opposite Joaquin Phoenix as Johnny Cash's father in Twentieth Century Fox's Golden Globe-winning film Walk the Line for director James Mangold.

Patrick has an extensive television and film resume. Audiences will remember Patrick as John Doggett on the last two seasons of the classic television series The X-Files. He is best known for his performance as the T-1000 in the box office smash hit Terminator 2: Judgment Day. He received critical acclaim for his high profile performances in the second season of HBO's The Sopranos. His film credits include Ladder 49, Charlie's Angels: Full Throttle, Spy Kids, All the Pretty Horses, The Faculty, From Dusk Til Dawn 2: Texas Blood, Copland, Eye See You, A Texas Funeral, and The Only Thrill.

He also appeared in the films Rosewood, Striptease, Fire in the Sky, Double Dragon: The Movie, Decoy, The Last Gasp and Hong Kong '97. He was featured in an episode of Showtime's The Outer Limits, in the TNT Original Movie Bad Apple, and in the CBS mini series Elvis, in which he played Elvis' father.

Born in Marietta, Georgia, Patrick was an avid athlete growing up but was taken with acting after sitting in on some drama classes in high school. He moved to Hollywood in 1984 and was cast in the beatnik play Go. He got his break during this performance when he was discovered by casting director Roger Corman.