I saw them mentioned one time earlier in this thread:
'And So I Watch You From Afar'
These guys are absolutely incredible. They're post-rock, but definately heavier and more 'busy'.
The opening track to their s/t is called 'Set Guitars to Kill' and is the most adrenaline-rushing song I've heard all year. Discovery of 2010 for me.
A friend of mine from Northern Ireland (where the band are from) gave me this album in May, and I'm just listening to it for the first time.
WOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOW
EDIT: Goddamn, this album singlehandedly renders Mastodon an obsolete band. It has all the brutal Mastodon sludgy ferocity, but with a touch of post rock beauty, and most importantly, no godawful lyrics and vocals.