There’s a fascinating speed run of Zelda: Ocarina of Time that made it onto metafilter, where the game is beaten incredibly quickly through an ingenious set of bug exploits that were gathered over the course of ten years.
I queued up the most interesting part of it on YouTube, where the speedrunner skips a huge part of the game through a difficult and technical exploit, and goes on to describe the elaborate twisted ways in which it works:
Crazy explanation of Speedrun as he continues to beat the game (watch a few seconds of this before you bounce off the page, my text isn’t nearly as interesting as this guy’s explanation.)
If you have the time, the whole video is pretty interesting. Ordinarily I wouldn’t watch something like this, but I got sucked it by the description of how the discoveries were made over the course of years, and how the speed run continued to evolve through a dedicated curious community.
What’s fascinating is the level of complexity and interesting discoveries hidden in just about any complex system, whether it be science, math, or even an old video game. It probably helps that I’m guessing this game had to be rushed out the door and perhaps had some inexperienced programmers working on it, which led to a more fascinating and strange world for speed-runners to explore.