The Million Dollar Hotel: Music From The Motion Picture
Such a shame that this is no longer in print. You can still buy it used though, and I highly recommend it. It has a smoky, jazz feel to it, which is great for quiet late nights. Includes some U2 songs, some original and some not. There's also a duet with Bono and Daniel Lanois, which is great, and my personal favorite "Dancing Shoes", which is just Bono, but his voice is unbelievable. I do recommend you skip the "Satellite of Love" cover, as the vocals are distorted to the extreme and I find it unpleasant. Otherwise though it's a great, totally mellow album.