Opeth is definitely my fave band right now. Not only are they tight musically, and all great musicians, but the music itself is far more advanced than most metal when you begin to dissect it.

I also agree the Blackwater Park is their best album. Ghost Reveries has great synth work-- which is a refreshing addition to the band-- but the incredible juxtaposition between the heavy, dark metal and the brilliant classical guitar work on Blackwater Park is just brilliant. I especially like "The Drapery Falls".

There's actually a section in "The Drapery Falls" where the band is playing in 6/8, but the drummer's playing underneath it in 3/4-- trippy as hell.

Now if you'll excuse me, I'm going to throw in my copy of Deliverance.