I'll be the first to admit this isn't for everyone, and if you're unfamiliar with it, you'd probably wonder why anyone would subject themselves to ear torture. But if you do familiarize yourself with it, or try to understand why anyone else would like it, you may appreciate it. It's sorta like Black Metal in that it's a very niche genre and polarizing one at that, those that approach it unitiated may hate it or find it offensive. Personally it appeals to your primal senses and is a catharsis, a release of aggresions, sorta.
I dunno, I do find this more melodic than most Merzbow songs, though.
http://www.youtube.com/watch?v=-MMoRTpfClU