Updated list:
Duran Duran (twice...one time with Sistermadly)
Def Leppard
U2
Motley Crue
Bon Jovi
Luther Vandross
Aretha Franklin
Garth Brooks (one of the best shows EVAH!)
Tina Turner (Joe Cocker was her opener)
Me'Shell NdegeOcello
INXS
Earth Wind and Fire
Janet Jackson
Dan Fogelberg (RIP)
Bryan Adams
Rollins Band
Jane's Addiction
Living Colour (twice)
Siouxsie and the Banshees
Nine Inch Nails, Fishbone
Violent Femmes
Body Count (with Ice T)
Butthole Surfers (yep went to the first Lalapalooza)
Heart
Styx
Patti Labelle
Sierra Swan
The Boy Least Likely To
Starsailor (5 times)
Joss Stone
Gin Blossoms
Sara Bareilles
Darius Rucker and Rascal Flatts
Sugarland
James Blunt (yes, I have seen him *cough* 11 times so far *cough*)
He is back on tour this spring and I have tickets for 2 of his shows (Ann Arbor and Chicago)--don't judge me!