Can I have some jazz recommendations, bluedeed? I've pretty much only listened to Miles Davis, and just bits and pieces of Ellington, Monk, Mingus, and Brubeck. The only jazz musician that I would claim to know anything about is Miles Davis, and I don't really know all that much about him either.
Iroqouis had some good recommendations (and I agree with his recommendation for a starting point with Mingus). Duke is obviously essential, Far East Suite is one of my favorites of his. Kind of Blue is essential as well. In addition to those, here are some of my favorite jazz musicians with one or two albums to check out:
Bill Evans - Explorations, Everybody Digs Bill Evans
Charles Mingus - Mingus Mingus Mingus Mingus Mingus, The Black Saint and the Sinner Lady
Dave Brubeck - Time Out, Jazz Impressions of Japan
David Newman - Fathead
Dexter Gordon - Go!
Oscar Peterson - Oscar Peterson Trio Plus One
Paul Desmond - Bossa Antigua
Stan Getz - Getz/Gilberto, Stan Getz and the Oscar Peterson Trio, Getz Au Go Go
Thelonious Monk - Monk's Dream, Thelonious Monk with John Coltrane
Among those, I'd say the first Stan Getz and Dave Brubeck are the best for the uninitiated, and my favorites among them are the Monk, Mingus, and Getz