I've been watching the 10-disc documentary series 
Jazz, directed by 
Ken Burns.  It's a truly magnificent historical narrative that I can't recommend highly enough.  It's a massive 19+ hours long, but you'll be tapping your feet, if not dancing around the room, the entire time.  Watch it.  I dare you.  
You can also Netflix it.  That's what I did, but I'd like to watch it again, so I feel it's worth owning.