Alan Ruck

Alan Douglas Ruck is an American actor. He played Cameron Frye, Ferris Bueller's hypochondriac best friend in John Hughes' Ferris Bueller's Day Off , and Stuart Bondek, the lecherous, power-hungry member of the mayor's staff in the ABC sitcom Spin City. His other notable films include Bad Boys , Three Fugitives , Young Guns II , Speed , Twister , and Kickin' It Old Skool . In 2016, he co-starred with Geena Davis in an updated Fox TV adaptation of William Peter Blatty's best-selling novel The Exorcist.