This Is Spinal Tap
Director Marty DiBergi (Rob Reiner) solemnly alerts us to the glory that was Spinal Tap in his introduction to this "rockumentary" about the legendary British heavy-metal group, featuring lead guitarist Nigel Tufnel (Christopher Guest), lead singer David St. Hubbins (Michael McKean), bassist Derek Smalls (Harry Shearer), and a succession of drummers whose careers were cut short by spontaneously combusting on their stool, drowning in somebody else's vomit, or otherwise perishing in untimely fashion.