Sing-A-Long Weekend Grease (1978) - Friday, 4:15, 7:00, 9:45pm The Muppet Movie (1979) - Sat. & Sun., 1:00 & 3:00pm Moulin Rouge (2001) - Saturday, 5, 7:30, 10:00pm Singin' in the Rain (1952) - Sunday, 5, 7:15, 9:30pm Hairspray (2007) - Monday, 7:15 and 9:45pm Brattle Theater, 40 Brattle Street, Cambridge More Information There's something about the Bostonian summer that just makes us want to sing and dance, dance, dance, our way about town. But......