Back in June, 2001--at the height of the '.com bubble'--I attended the four day JavaOne developer conference in San Fransisco. I attended two free (to me) private shows: The B-52's (sponsored by Sun) and Spinal-Tap (sponsored by IONA). IONA actually got the three principle actors from the movie This is Spinal-Tap to perform live for invited guests at the (then) newly renovated Masonic Hall. And--get this--'Tap was only one of the attractions: the party had a different flavor on each floor. The three floors included Rock and Roll Fantasy Land, Unreal/Surreal Land, and The Den of Indulgence. Food, drink, music (pole dancers), all provided gratis by IONA.
It took me about 20 minutes or so to convince myself that the musicions playing live on stage were, in fact, Spinal-Tap.
I've loved that movie forever; it was one of the first 2 or three DVD's I purchased.
I just saw Christoper Guest, Harry Shearer, and Michael McKean perform at Atlanta's Fox Theatre. They spent about two hours covering Spinal-Tap and the Folksmen (from A Mighty Wind). McKean's wife, Annette O'Tool joined them for a couple songs.
All (mostly all) unplugged. Acoustic versions of Sex Farm and Hell-Hole--you get the picture. I had a wonderful, joyous two hours.