The first concert I saw was when I was 12: Neil Diamond
Later on in order as much as I can remember: B.B.King (multiple times)
Deep Purple
Yes (multiple times)
Pink Floyd
Def Leppard (not a fan, went with friends at the last second)
Day On The Green in Oakland with Poison, Whitesnake and Motley Crue as headliner.
Motley Crue later on. One of the funnest shows I've been to. It was outdoors and raining in a small venue, but you were there partying with the Crue.
Nine Inch Nails (multiple times and I'm seeing them again in September)
Go-Go's
Bow Wow Wow
Marilyn Manson (multiple times and waiting to see more)
Ozzfest with Manson, Disturbed, Korn and of course Ozzy.
Tori Amos
David Bowie. If a show can be described as beautiful, this would be it.
I'm sure I'm forgetting a bunch.