Old Death Cab for Cutie. In particular their albums "Something about airplanes" and "You can play these songs with chords". If you appreciate good indie/alternative rock music, you should love it.
Some Modest Mouse. When I say some, I mean some. I find a lot of their newer music lacking somewhat, but their album "This is a long drive for someone with nothing to think about" is great, it blew me away.
That's just my opinion, if you have any other bands/albums you would like to share please do.