"This Is Spinal Tap" is the stuff that legendary films are made of: it is hilarious, has memorable quotes ("These go to eleven" having become a cliché among metalheads), pokes fun at itself as much as at its characters, shows real underlying affection for the bands parodied in it, and is above all the perfect occasion for a heavy metal quiz.
This "rockumentary" follows the career of Spinal Tap, a British heavy metal band, through its ups and downs, most if not all of the anecdotes and mishaps featured in the movie having really happened to real-life bands (have fun spotting all the references to Judas Priest, Iron Maiden, Black Sabbath, and so on... or the Beatles, for that matter!).
Another notable aspect of Spinal Tap is the actors' performances. Not only is their Cockney accent brilliantly done, they actually play the music, and Spinal Tap has had a real existence on stage... without a Stonehenge decor.