Disorders that cause wild flailing - which probably shouldn't be funny, but are

So I was skimming through a review book that I have, Clinical Neuroanatomy Made Ridiculously Simple (there's a whole series of those "Clinical Blah Blah Blah Blah Made Ridiculously Simple" - the microbiology one was particularly helpful for stupid memory aids and mneumonics when I took medical micro as a graduate student a couple of years ago.) Anyway, I was perusing a list of basal ganglia disorders (which has nothing to do with what I'm doing in my neuroscience course right now, but I find disorder more interesting than order) and I learned of this malady:

Hemiballismus - a sudden wild flail-like movement of one arm

With all due respect to anyone who is afflicted with that condition, of course, but - bwahahahahaha. That's pretty funny. I probably wouldn't find it as funny if I had it myself, or if, say, the guy who sits beside me in class had it - I wouldn't enjoy being pummelled every day.

And in a completely unrelated story, my favorite Lurker-Who's-Not-Really-A-Lurker Lydia requested the following clip - from the Family Guy episode The Courtship of Stewie's Father, it's Brian doing Peanut Butter & Jelly time. You know, dressed as a giant banana. Good times to be had by all. Right click and "save as", or else I'll be forced to figure out some way to inflict hemiballismus upon you, and then I'll come to your house and point and laugh at you through your window as you flail around wildly.

Peanut Butter Jelly With a Baseball Bat! (~17MB)