The Gibbon has just become one of my favourite animals, mainly because they seem to take great delight in being absolute pricks towards other species. Check out a gibbon tormenting a dog:

I think the reason this video is so funny is that the gibbon actually looks like an ugly little human, and when he runs away with his arms flailing everywhere I can’t help but think of a mischievous little child. Second, and much more hardcore, a gibbon takes on two tigers:
Thank you Mr. Gibbon for being an absolute bastard to the other animals and really making me laugh.

I reckon a gibbon would really make a mess of your pots and pans if it had the chance.
I wonder if it really was just being a bastard or if it was trying to lead the tigers away from its children or something. Entertaining anyway.
I thought you may enjoy this:
http://fogonazos.blogspot.com/2008/03/top-10-amazing-laboratory-reactions.html