This is Spinal Tap (1984) C-83m. ??? D: Rob Reiner. Rob Reiner, Michael McKean, Christopher Guest, Harry Shearer, Tony Hendra, R.J. Parnell. One-of-a-kind parody of a rock documentary with Reiner as Marty DiBergi, filmmaker recording a concert tour of the most incompetent heavy metal band that ever made a return to the stage. Machiavellian and often very funny, with now-legendary scene with the amplifier that goes to "11".