Ed O'Neill (b. 1946) plays Bill Jacks in John From Cincinnati.
O'Neill is best known for his starring role as Al Bundy in the sitcom Married... with Children, which aired on FOX from 1987 to 1997. Since then, O'Neill has played roles on the TV shows Dragnet, The West Wing and The Unit. He also starred in David Milch's short-lived series Big Apple.