I went to see the Summer Sanitarium Tour at Texas Stadium, it had System of a Down, Powerman 5000, Kid Rock, Korn, and Metallica. Unfortunatley, James Hetfield had a major back injury and was unable to perform at that concert, so they had a lot of the other bands help out, Kid Rock sang a lot, and totally ruined Fuel, but they did a free concert about a month later which was really cool.