Eels are kinda like that, so are Built to Spill. I'm not really sure what kinda music you're looking for but Sigur Ros are pretty good. They're Icelandic too so that's a plus.

yes
king crimson
van der graff generator
gentle giant
genesis
ELP
jethro tull
procal harum
the nice
the mars volta
camel
focus

And if you like rock bands that incorperate symphony orchestras and string and horn sections into their music...try Days of future past by the moody blues, and Time and a word and Magnification by Yes.