When Ken Shapiro’s The Groove Tube arrived on movie screens in 1974, skit comedy and television parody had long been a staple of America humor. But it had never been presented with such a snot-nosed attitude, filthy mouth and full-frontal nudity. It’s hard to imagine now, but this was before Saturday Night Live or SCTV; a strange import called Monty Python’s Flying Circus was just beginning to gain a beachhead on U.S. television sets. Needless to say, The Groove Tube quickly became the movie for teenagers to sneak into during the summer of 1974, and when it moved to cable a few years later, clandestine late-night viewings became a rite of passage. But with this screening at the Cult Fiction Underground, there’s no need to keep the sound down low and your hand on the off switch for fear of Mom and Dad appearing at the door.