I have attended:
Metallica (With Godsmack) <--Best Frickin concert EVER!
Evanescence (With Breaking Benjamin, Seether, Three Days Grace)
Velvet Revolver (With Three Days Grace)
Sum 41 (With No Warning)
My list of concerts to come:
Ozzfest
The Used, Alexisonfire, Underoath, w/ Head...