Music with a similar sound to Opeth's "Damnation"?

I think Meshuggah sounds something like that. Theyd be good if they werent so darn repetitive.
 
Porc tree, definetly
Maybe Camel? Haven't heard enough of their stuff to make an intelligent decision.
 
IMHO, Damnation is its own breed of cat. Nothing else sounds like it that I've heard, and I've heard a lot. Some other acts might bear passing similarities, but that's about it.
 
ill give you several bands which all sound very similar to damnation and did/could have very possibly influenced the album at least indirectly.

Gandalf - Self titled (not the metal gandalf)
Extradition - Hush
Ragnarok - Selt titled (not the metal ragnarok)
Linda Perhacs - Parallelograms
Anekdoten - Gravity
Cressida - Asylum
T2 - Itll All Work Out In Boomland
Spring - Self Titled
Mr. Toad - Trench Art
National Health - Self Titled
Nick Drake - ANY
Gilgamesh - Self Titled