interesting thread. I think you can tell alot about a person by their taste in music and somebody other than me knows who Todd Snider is.
List? wow too many brain cells destroyed, but I'll try

Led Zepplin 3x
Pink Floyd 3X (dark side of the moon tour was the best)
Emerson Lake Palmer
The Who 2x (once at Indiana Beach...crappy little resort)
Jimmy Buffett...every year
Alice Cooper...way too many times
Steve Earl
Jethro Tull
Jeff Beck
Rod Stewart
Stevie Ray Vaughn
Ten Years After
George Benson
Janet Jackson (no boob shot and I took my daughter..embarrassing to mention)
BB King
Neil Young
Willie Nelson
Arlo Guthrie
Crosby Stills Nash Young
John Sebastian
Dave Mathews
Doobie Brothers
Grand Funk Railroad....damn I am old
The Hollies
Yes
Mott the Hoople
John Prine
oh my the list goes on and on...