Most of the Who's farewell tours
Emerson Lake & Palmer
Genesis (Trick of the Tail, Wind & Wuthering)
Tubes
Jean-Luc Ponty
Strawbs
Gentle Giant
Yes
Jeff Beck & Jan Hammer (skipped high school graduation)
Little Feat
Pat Metheny
Dire Straits
Max Webster
Duran Duran (forgive me )
Musical Box
Saga
Probably missing a bunch. Never did get a chance to see Floyd...