I'm looking for songs that are similar to the famed John Mayer song, lyrics are optional. I just want something mellow that isn't quite jazz or blues, but really puts you in a mild mood. Do you guys know what I mean? I'm just looking for songs like this to make into a playlist that I can sleep to.

So, suggest away!
very very difficult question... there's so many.

try "falling down" by muse. that's a good one.
Banging on a trash can
Drumming on a street light