Nothing beats a pantera circle pit, but as for local i would have to say FSU, Soul Asunder, and Retribution. One of my favorite shows was CoB their keyboardist Flipping shreRAB! +1000 style points for teh keytar!
Hmmm............
The best band I've seen live without a doubt would be Slipknot.
I had expectations as to how good they would be, and they went above and beyond.
They tore the fucking place apart. Amazing energy and sound.
Chimaira is damn awesome as well.
I'd love to see Counting Crows live, hopefully when they come back around Vegas again.
Warped tour two years ago a surprise of a band did amazing on stage. That band, believe it or not, is Something Corporate. God they were good live. Following second is Flogging Molly.
Man I want to see Radiohead more than any other band ever. COME TO TEXAS MORE OFTEN!