It's hard to believe the iconic musical The Rocky Horror Picture Show turns 49-years-old this year. Seldom-seen during its initial theatrical run in 1975, the film and its marvelous soundtrack has become one of the most beloved musicals of all-time thanks to its decades-long success on the midnight circuit. Fans show up in droves to shout clapbacks at the screen, gleefully throw toast, toilet paper, and playing cards at certain points, and meticulously craft costumes of their favorite characters.