Despite this film's faults--and there are many cringe-worthy reminders of just how racist American films once were---"Casablanca" remains watchable almost to an inexplicable degree. I think the reason lies in the performances of Humphrey Bogart, Ingrid Bergman, and the supporting cast that includes Claude Rains, Sydney Greenstreet, and Peter Lorre, all three of whom are going at full tilt. Despite being referred to as a "boy," 56-year-old Dooley Wilson singing "As Time Goes By" is one of the main elements in the film's longevity. Play it again Sam.