What are your Chill out/Relaxation songs?

Actually, I'm really loving Sara Bareilles right now. Her "Love On the Rocks" is very smooth yet I can really get into it. Buut... I don't think that's quite the type of music you're listening to. :) Her duet with Weezer is a lot of fun though ("If You're Wonderin' If I Want You To, I Want You To")