Director William Friedkin was a hot ticket in Hollywood after the success of The French Connection, and he turned heads (in more ways than one) when he decided to make The Exorcist as his follow-up film. Adapted by William Peter Blatty from his controversial best-seller, this shocking 1973 thriller set an intense and often-copied milestone for screen terror with its unflinching depiction of a young girl (Linda Blair) who is possessed by an evil spirit. Jason Miller and Max von Sydow are perfectly cast as the priests who risk their sanity and their lives to administer the rites of demonic exorcism, and Ellen Burstyn plays Blair's mother, who can only stand by in horror as her daughter's body is wracked by satanic disfiguration. One of the most frightening films ever made, The Exorcist was mysteriously plagued by troubles during production, and the years have not diminished its capacity to disturb even the most stoical viewers. --Jeff Shannon