Julia Roberts in Firehouse (1987)
Julia Roberts got super famous relatively early in her career, so there wasn't too much time for clunkers. But there were a few. Firehouse is a raunchy comedy á la Police Academy that used the tagline, "When the fire's out...the heat is on!" Roberts plays a character named Babs, but doesn't do enough in the film to even get a screen credit. Roberts filmed another movie entitled Blood Red before Firehouse, but it wasn't released until 1989, making this lowbrow farce her big-screen debut.