Underrated bands?

Porcupine Tree - They don't get mentioned as often as they should.

I'd say they are far from underrated. They may not be mainstream but they get plenty of mention in the prog rock scene.

EDIT: Some of their songs are on V-Cast as ringtones. I'd consider that far from underrated.
 
I used to like them too for a while, but they got boring pretty quick. but it seems like one of those bands that no matter how big they are everyone seems to hate them.