^Good extensive list is good and extensive. Pretty much covered most of what I was going to suggest as well (DCFC, Damien Rice, Bloc Party, etc).
A couple of other mellow artists I was thinking of were Passion Pit and Noah And The Whale. The former is just really good chill music, a little dance in it for parties. The latter is great for sitting back pondering the intricacies of life (read: broken relationships). Porcupine Tree is also a band I recommend to everyone, because their music spans so many different genres that they pretty much suit everyone.
A couple of other mellow artists I was thinking of were Passion Pit and Noah And The Whale. The former is just really good chill music, a little dance in it for parties. The latter is great for sitting back pondering the intricacies of life (read: broken relationships). Porcupine Tree is also a band I recommend to everyone, because their music spans so many different genres that they pretty much suit everyone.