Out of the above bands, i have personally met:

Slipknot (The whole 9)
you know you must die by my hands now right? slipknot is my top favorite band of all time (and i don't give a fuck about the fuckers who try to say they just scream and suck, becasue i think it's mostly the fact they can't understand the words being said, as if they were listening to a foriegn languge) i've never even been to a concert ~sigh~ and i don't hink i will ever have the oppurtunity to do so...