When Marti DeBergi set out in 1984 to capture “the sights, the sounds, and the smells” of legendary 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.

A great testimony to the craft and inevitable humor of rock music, This Is Spinal Tap finds a perfect alignment of comedic talents producing a film of endless humor and unexpected wisdom. One of the first mockumentaries, it has now become one of the biggest influences on the genre.