If you've not yet seen this flick from Quentin Tarantino, then you really should do it as quickly as possible. The plot line is simple: accompanied by a German bounty hunter, a freed slave named Django travels across America to free his wife from a sadistic plantation owner. Everything else is Tarantino-esque. Just a warning: you can't watch this with your kids in the room.
The movie is long, but you can see if it's right for you by watching this trailer.