This Is Spinal Tap

This Is Spinal Tap is an American 1984 rock and roll musical mock documentary directed by Rob Reiner about the fictional heavy metal music band Spinal Tap. The movie satirizes the wild personal behavior and musical pretensions of hard rock and heavy metal musical bands, as well as the hagiographic tendencies of rock documentaries of the time.

Reiner and the three main actors are credited as the writers of the movie, based on the fact that much of the dialogue was ad libbed by them. Several dozen hours of footage were filmed before Reiner edited it to the released movie. A 4½ hour bootleg version of the movie exists and has been traded among fans and collectors for years.

The three main members of Spinal Tap—David St. Hubbins, Derek Smalls and Nigel Tufnel—are played by the American actors Michael McKean and Harry Shearer, and English-American actor Christopher Guest, respectively. The three actors play their musical instruments and speak with mock English accents throughout the movie. Reiner appears as Marty DiBergi, the maker of the documentary. Other actors of the movie are Tony Hendra as group manager Ian Faith and June Chadwick as St. Hubbins' interfering girlfriend Jeanine. Actors Paul Shaffer, Fred Willard, Fran Drescher, Bruno Kirby, Howard Hesseman, Ed Begley, Jr., Patrick Macnee, Anjelica Huston, Vicki Blue, Dana Carvey and Billy Crystal all play supporting roles or make cameo appearances in the movie. Actresses Brinke Stevens and Linnea Quigley appear in cameos as groupies of the band.

In 2002, This Is Spinal Tap was deemed "culturally, historically, or aesthetically significant" by the Library of Congress and was selected for preservation by the United States National Film Registry.