To add to Elizabeth's last post: when trying to introduce someone to Jazz, I generally try to be cognizant of the fact that a person either "gets" Jazz or they don't. There's really no in-between. So, I find that all you can really do is expose a person to some good recordings and let the rest run its course. In the Ken Burns series, Wynton summed it up pretty good when he said (and I'm paraphrasing) "Jazz doesn't come to you, you have to go to it." In a world where everyone wants convenience and instant gratification, not many people are willing to invest the time and "go to it." Just my 2ยข