Here's a cool video where you can really see Django's unique (by necessity) technique. It really gets going around 4:42.
http://youtu.be/hXKztQaCh24
Great vid--there isn't much video of Django out there. Anyone interested in Django's style might also want to look up some Bireli Lagrene. He's well known for carrying the torch for "gypsy jazz," also equally adept at straight-ahead jazz as well as fusion (did some records w/ Jaco in fact). So good he's almost hard to listen to...one of those guys who makes you think you might want to burn your guitar.