After 28 years and an estimated 2,100 screenings, the AMC Loews Harvard Square 5 in Cambridge, Mass., hosted its last showing of “The Rocky Horror Picture Show” on Saturday, according to The Boston Globe. That ended one of the longest movie theater runs in history. The film, which stars Susan Sarandon and Tim Curry, became a cult phenomenon in New York after its release in 1975 at the Waverly Theater in Greenwich Village, where midnight screenings ran until the theater closed in the fall of 2001. The traditional Saturday-night screening at the Harvard Square AMC began in 1984 and encouraged audience members to dress in costumes while reciting lines along with the film. It also included a “shadowing” performance by the theater troupe Full Body Cast. AMC announced that it had sold the theater in June and that it would close permanently on Sunday.