What I listen to ranges with my mood. And because of my ADHD, that can range quite a bit. So here goes:
For the high energy times:
-Metallica
-Tool
-System of a Down (on hiatus!!! ::cries:

-Sum 41
-POD
For the times when I'm in a violent mood (like when I'm at my martial arts school training):
-Disturbed
-Some Limp Bizkit (some of it's good... other bits bug me)
-AFI
-Anti-Flag
-Megadeath
-Brujeria (look em up if you like seriously heavy stuff that still has a melody)
-Dragonforce
For the times when I'm thinking/working with my brain:
-Radiohead
-Muse
-T R A N C E [] C O N T R O L (good background music)
-The Mars Volta
-Helix6
For the times when I'm down/sad/less energetic:
-Nine Inch Nails
-The Mars Volta
-Tool
-Korn
-Eve 6
-E.S. Posthumous (would make really good movie music....)
I've probably forgot some, but this is all I can think of without ripping through my library...
[edit] I don't dance... unless I have my favorite person in my arms... she's the only one who can make me dance... Unless you count headbanging/moshing as dancing... [/edit]