Jeffrey Jones played Principal Rooney in Ferris Bueller's Day Off. Known for his comic but flustered deadpan, Jones already had a solid resume under his belt before Ferris tweaked his proverbial nose, but the film catapulted him to the top of the character-actor charts. Since Ferris Bueller, Jones has scored more than 25 film roles and several runs on television, despite his run-ins with the law (See below).