Simon
Yes, Sigur Ros is definitely something of an acquired taste - but I was instantly into Rocco DeLuca; a remarkable talent. Why is it these guys seem to have more notes on their guitar than I do, and their guitars also seem to be easier to play than mine? (sighs, and goes back to day job......)
While you're acquiring your taste for Sigur Ros, you may want to check out Mari Boine Persen. A modern twist on traditional Saami music.
https://www.youtube.com/watch?v=kprl0CECykA