Movie: This is Spinal Tap (1983)
A sharp, altogether convincing roast of rock music's lamest characters, the mockumentary This is Spinal Tap presents three of the most lunk-headed musicians ever put to celluloid: Nigel Tufnel (Christopher Guest), David St. Hubbins (Michael McKean), and Derek Smalls (Harry Shearer). And, like most successful rock acts, their fame eventually deteriorates and album sales go down the crapper.
Trying to regain popularity, the Spinal Tap fellas dream up a real attention-grabber for their concert tour: They erect a huge Stonehenge megalith on stage to accompany an operatic, overly melodramatic song about England's prehistoric monument.
There's just one problem: They requested an 18-foot-tall construction, but what lowers onto the stage measures at 18 inches. It's an epic fail, and Hubbins sums it up best, with, "I do not, for one, think the problem was that the band was down. I think that the problem may have been that there was a Stonehenge monument on the stage that was in danger of being crushed by a dwarf."