I've been listening to Jazz for most of my life (though that is not much to say, at 19 years old). Just can't actually enjoy any other genre. I have definitely moved from a bebop- hardbop obsession to a more wider/contemporary scene. I'm currently listening to some Dave Holland, specially his more jazz-oriented work (not really that fond of his rock/acid new albums), definitely give him a try if you enjoy some superb bass grooves, with some of the best contemporary soloists.
http://www.youtube.com/watch?v=tvswl5jqM8M
Regarding contemporary drummers, stanton moore's work is fantastic. Just can't get enough of that new orleans vibe.
http://www.youtube.com/watch?v=kRQIakZ2qK8
(audio quality is kinda bad, but my good aren't those guys fcking grooving).
Just as a way of closing this post - can't believe that you guys could be talking about jazz and anime in the same thread and haven't still mentioned The Seatbelts (shame on all of you).
BTW: Infinite hate and envy for the Op's chance of seeing master Mehldau live. It's hard to live in south america and love jazz I guess...