As far as The Hollywood Reporter was concerned, 1990’s Flatliners was dead on arrival. The Joel Schumacher film’s title comes from ER slang for someone whose absence of vital signs produces a straight line on the EKG — i.e., they’re a goner. In the movie, a group of medical students (Kiefer Sutherland, then 23; William Baldwin, 27; Kevin Bacon, 32; Oliver Platt, 30; and Julia Roberts, 22, who’d just had a massive hit with Pretty Woman) perform experiments where they stop one another’s hearts, rendering themselves technically dead. After being resuscitated, they have memories of the experience. Schumacher once explained the film this way: “The movie’s about atonement and sins from the past.” THR, however, was unmoved. “If you hooked this script up to a dramatic life indicator, it would…