Nina Simones's "Ne Se Quitte Pas." Very smooth and laid back, mostly featuring simple piano and upright bass to accompany her deep voice. Wonderful.
Joe Boyd Vigil's "Deep Space Bass." If anyone here watched Toonami back in the day, you know how awesome the music videos and Toonami commercials were. Drum n bass awesomeness. It was all made by Joe Boyd Vigil, an electronica artist. This is the album that brings it all into one collection. I'm probably just biased and nostalgic, but this album is fantastic.