Jim Beaver

James Norman Beaver Jr. (born August 12, 1950) is an American actor, playwright, screenwriter, and film historian. He is most familiar to worldwide audiences as Bobby Singer in Supernatural. He also played Whitney Ellsworth on the HBO Western drama series Deadwood, which brought him acclaim and a Screen Actors Guild Awards nomination for Ensemble Acting, and Sheriff Shelby Parlow on the FX series Justified. His memoir Life's That Way was published in April 2009.

He is portrayed as Spencer in CBS comedy series B Positive.