Jazz as the genre is the most sub-varieties; from acid jazz to free jazz, to bebop and hardbop, to cool and smooth jazz and everything in between.
A recent genre that has been created (through experiments) is Nu Jazz. It's loosely defined as jazz music with electronic sounds, beats, and rhythms. Unlike traditional jazz, Nu Jazz focuses on the ambiance and music as a whole and less on an individual musician's musical prowess.
Here's one track I heard not too long ago, called "Saint Germain" (after the French quarter of Paris) by DJ Cam, which is features on his Rebirth of Cool CD (a Miles Davis reference there) and the Saint-Germain-des-Prés Café Vol.9 nu jazz compilation album: