Several in Spanish. I used to listen to both Ten and Vs. (Pearl Jam) albums every night before going to sleep my first year away from home, followed by the Indigo Girls' Nomads Indians Saints. It was my bedtime mix.
Used to listen to Norah Jones a lot a few years back, she was very soothing. Kind of fed up with her now. Now if I want to relax before bed, some Wilco, Travis's "The Invisible Band" or the Smashing Pumpkin's "Tonight."
"Doing the Unstuck" by The Cure and the Lightning Seeds' "Pure" are more upbeat, but have always given me a great happy vibe.
Holly Cole is starting to grow on me, especially "Make It Go Away", which I'm playing while compiling this.