Let's see now... Seen Iron Maiden, Funeral for a Friend twice because they opened for Maiden, Metallica, Korn, Slipknot, Machine Head, Iggy Pop, Linkin Park and HIM solely because they were playing at a festival that some of the other stuff was and there was literally nothing else on at the time (HIM are the WORST live band I have ever seen), Queen + Paul Rodgers, Rammstein, Foo Fighters, Nine Inch Nails, Dillinger Escape Plan... At least that's the ones I can remember, ahah. ^^;

...Foo Fighters was the last one I went to, though. Haven't been to a concert in years. : (