Norman Jay Rambeau (November 13, 1941 – March 21, 1994), professionally known as Dack Rambo, was an American actor, most notable for appearing as Walter Brennan's grandson Jeff in the ABC series The Guns of Will Sonnett, as Steve Jacobi in the ABC soap opera All My Children, as cousin Jack Ewing on CBS's Dallas, and as Grant Harrison on the NBC soap opera Another World.