Jeffrey Duncan Jones (born September 28, 1946 in Buffalo, New York) is an American actor. He's perhaps best known for playing Dean Ed Rooney in Ferris Bueller's Day Off, Charles Deetz in Beetlejuice, and other comedic roles. He also had a prominent role as Emperor Joseph II in Milo Forman's film adaptation of Amadeus and was part of Disney's Magic Kingdom's ExtraTERRORestrial Alien Encounter (he also played Snow White's Magic Mirror in a Disney Halloween music video special in 1987).
His career ground to a halt when he was arrested for possession of child pornography and soliciting a 14-year-old boy. Since this incident his most high-profile role has probably been as A.W. Merrick on the critically acclaimed Deadwood.