Internally Deformed
Farseer of the Paranormal Abysm
It gets more nasty after a while but I think there is something to be said when this bands music was such that it forced fans to vomit and run out during concerts.
Lol pussies. But yeah, I've been meaning to give Swans a proper look in for a while; I've read a few Napalm Death interviews where they state how big an influence they are. And you can definitely hear the similarity between that^ and something like Godflesh.
From the sound of it it will probably take me a few listens to get accustomed to it though, if at all.