The Who
Led Zeppelin
Three Dog Night
The Doors
The Greatful Dead
Cream
John Mayall
Crosby, Stills, Nash and Young
It's a Beautiful Day
Chicago, Crow and a bunch of other bands at a festival the memory of which is blurred by chemicals.
Kenny Rodgers and Dolly Pardon (my wife wanted to go, a pretty good show really)
Bette Midler (same as above, but really good show)
God Smack (just about went deaf taking my kid)
Trans-Siberan Orchestra (REALLY good show)
Indigo Girls (lots of fun, an outdoor show at the Woodland Park Zoo)
Seattle Symphony and choir doing Beethoven's ninth.
I'm sure there's more but I can't remember them just now.