Psy you noob. All you have to do is take the kimura one step further and you've dislocated the bastards arm. And there's so many shortcuts for the moves in BJJ, it's ridiculous.
Anyway, I take BJJ and MMA. Though our teacher is fairly fluid. It's more of a self-defence class than anything else, so he shows us quick moves that will help us in a "GIMMEYAWALLET!" situation. However, some of the guys do it professional, so we get to see what that all looks like too. It's good fun and it keeps me fit. We also practice Cider Jitsu and Rave Jitsu (our own inventions). I'm going to uni in Manchester soon, so I plan on seeing what's available there. I know a few guys who do Wing Chun, and it's something I want a piece of. They all say it's more of a support art than a combat art. It improves your focus, reflexes etc. which, when combined with some super awesome ninja moves, can end up being pretty brutal. Mmm tasty.