Sigur Ros fan!!
Very cool.
I haven't heard faith and the muse. I'll have to check em out. Thanks for the suggestion.
Yeah, now that you mention it, "Dead Can Dance" is more tribal than Eastern, eh? Still good stuff though.
Make sure to check out Nusrat's stuff. It'll be right up your alley. If you like his stuff you'll find all kinds of great qwaali singers that are almost as good as him.
Ozric Tentacles are all instrumental. When they do have voices they're Eastern. What's interesting about them is that their instrumentation always seems to revolve around Eastern style scales and progressions.
Pistolero is a good tune. The stuff off of Bible of Dreams is Eastern influenced, but it's not a very strong influence. It's definately there though.
The rest are very eastern influenced.