This Is Spinal Tap is a satirical mockumentary film directed by Rob Reiner. The movie follows the fictional British rock band Spinal Tap as they embark on a disastrous concert tour in the United States. This Is Spinal Tap satirizes the music industry, rock and roll culture, and the egos of musicians. The film's deadpan humor and improvised dialogue make it a hilarious and enduring satire of the rock music scene.