For some great straightforeward rock Titus Andronicus's "The Monitor" is an incredibly ambitious album that gets a bit better every listen. They have a very rough sound which turns some people off them, but they're worth a listen.
I can't recommend Halcyon Digest enough. Really lush and beautiful rhythms and melodies all over this thing:
http://grooveshark.com/#!/album/Halcyon+Digest/4998693
Flying Lotus's new album "You're Dead" is great too. Fun trippy jazzy hip hop grooves:
http://grooveshark.com/#!/album/You+re+Dead/9892572