Best to See Live?

Amon Amarth would be fun to see -- crazy ass windmilling!
And Dimmu Borgir would be cool too. Theyre amazing, I especially love their vocals! Has anyone seen them?
 
Opeth, Porcupine Tree, Ensiferum, Down, Turisas, Lamb of God just to name a few. Pantera were always a great live band back in the day. I seen them over ten times and they never failed to disappoint. Especially with Slayer.
 
Overkill (Vocalist absolutely rips through the songs live. Even better so than in studio)
Megadeth (Vocals aren't really good except back in the day, but the agression factor is X10)
Rush (They even make their 80s output amazing)
 
Dillinger Escape Plan are easily the most intense live band I've seen.
Metallica and Slayer both put on awesome shows with awesome sound and played all the songs I wanted to hear.
Coroner were an amazing live band when I saw them, their playing and the sound was utterly flawless.
Same goes for Cynic.
Suffocation are really entertaining live.
Isis are another really good live band.