"Spinal Tap" is a 1984 mockumentary film directed by Rob Reiner. It follows a fictional British heavy metal band called Spinal Tap as they embark on a disastrous American tour. The film humorously portrays the challenges and absurdities of the music industry, showcasing the band's eccentric members and their over-the-top antics. The film is known for its satirical take on rock culture and has become a cult classic. It features a blend of scripted and improvised dialogue, with notable performances by Christopher Guest, Michael McKean, and Harry Shearer. "Spinal Tap" has influenced many subsequent mockumentaries and remains a significant work in film history.