Was browsing around and happened to find this.

For those who don't know, a speed run is where someone tries to complete a game in the shortest time possible.  "Tool assisted" means that they use various slowdown techniques, including game pausing, rerunning etc to try and make a "perfect" run of the game.


Interesting to watch some of the impossible tricks they perform...
(Lol @ glitch in Zelda (SNES) finished in 3 minutes...)