I just remembered one while looking at the thread "How did you find Blocktopia?" It was way back when I was just a regular old player. (probably in august 2010) We were playing on the map Desert and I was sitting on one of the buildings getting bored because nobody would chase me. I spotted a zombie and ran at him. As I got within a couple blocks of him I veered off to the side. Yay I finally got someone to chase me! :D But that wasn't enough, I got the crazy idea to chase the zombie as well. So there we were, running in a circle around an empty space about 2x2. I made three full circles before the zombie thought for a second and cut through the middle. I got zombied, but I didn't care, I was just about falling out of my chair I was laughing so much.
And on top of that someone on a jump course had watched the whole thing and told me I was his new favorite person for pulling that little stunt.