My only experience with them went a little like this:
In college we had some local guys show up at one of our fraternity parties, they started trying to pick a fight before they even made it through the gate. Just when it looked like the 4 of them were about to get thumped by all of us one of them pulls out a set of nunchaku from behind his back and starts going through his routine. Everyone scatters and starts to freak out. My friend and I didn't budge. The guy immediately starts screaming how he will kick anyones ass that gets close to him despite the fact that he is on private property, and is clearly trying to start some shit. My roomate and I were working the gate that night, so with perfect timing we each grab a metal folding chair, rush him, and with one swing each knock him out cold, pro wrestling style. He didn't have a clue how to defend a metal chair, so I think we both him him at about the exact same time....he had some fantastic moves with the nunchaku though.......