Really, anything prog. Why? Because it is so different from everything else. Usually rather technical, no song structure, odd time signatures, all make it very interesting. Some awesome prog metal bands are Between the Buried and Me, Opeth, Dream Theater, Scale the SUmmit, Animals as Leaders, Periphery. Prog rock would have to be Rush, Porcupine Tree, Yes. I am probably forgetting some very good ones.
dude... scale the summit..... epic... appleseed cask?
if you like between the buried and me...
check out those who lie beneath... there from portland or.. and my buddy is on the vocals.. they shred hard..
I just listened to Those Who lie Beneath. They sound more like Beneath the Massacre or Veil of Maya, than BTBAM. Either way they are pretty good.
Completley different genre here - anybody who hasn't listened to Neil Young yet should get on that now.