I was inspired by the Sexiest Voices thread.
Dummy by Portishead is a given, as is almost anything by Lovage.
I've got Sex and Candy, Come Away with Me by Norah Jones, Banana Pancakes, Can't Get You Out of My Head (and an awesome a Capella cover by Basix), the Unplugged version of Are You Gonna Go My Way, and Come on Closer.
As you might have just figured out, I prefer individual songs to whole albums most of the time. That's how I download--song by song. When I want an album I go out and buy the physical CD, because I love looking at the album art, reading the liner notes, and other things you can only really get from having a physical CD in your hands.
Suggestions? Discussions?