Christopher Guest as Nigel Tufnel, lead guitarist for the entirely fake band Spinal Tap, in the band's 1983 mockumentary. The Kobal Collection hide caption itoggle caption The Kobal Collection All Songs Considered Question Of The Week: What's Your Spinal Tap Moment? September 29, 2014 Think back to the shows you've been to. Were there any moments where everything fell apart or flopped for the band? These are the Spinal Tap moments when a band reaches its comical nadir.