Another band I was really excited to see at Rock on the Range this year was Exodus! I've seen them a few times, and they always kick serious ass live! The dual shredding guitars of Gary Holt and Lee Altus (of the fantastic Heathen, too) really make Exodus a force to be reckoned with.
I first saw them before Lee joined the band, and since he's come on board, the band has gotten even better! And luckily, I got to see Lee Altus briefly after their set and geek out with a picture!