Pseudo-rockumentary about heavy-metal band Spinal Tap, profiling their career from "England's loudest band" to an entry in the "where are they now file." Hilarious satire, featuring music performed by Guest, McKean, Shearer, and others. Included are Spinal Tap's music video "Hell Hole," and an ad for their greatest hits album, "Heavy Metal Memories." Features great cameos, particularly David Letterman's Paul Shaffer as a record promoter and Billy Crystal as a surly mime. First feature for Reiner (Meathead on "All in the Family"). Followed by "The Return of Spinal Tap."