When Marti DeBergi set out in 1984 to capture “the sights, the sounds, and the smells” of British rock band Spinal Tap, what he ended up with was something quite unexpected: nothing short of the quintessential roc doc—shocking, wild, funny, and totally staged. This is Spinal Tap was Rob Reiner’s directorial debut and is the grandfather of the mockumentary form. So crank it up, baby—all the way to eleven.