There are a lot more than that one, too! QDQ is the original, but Quake done Quicker and the Rabbit Run are also required viewing. And then you move on to thing

There are a lot more than that one, too! QDQ is the original, but Quake done Quicker and the Rabbit Run are also required viewing. And then you move on to things like Super Metroid... It was this stuff that got me into the Speedruns (and TAS) scene. Your two main resources for this are: http://speeddemosarchive.com/ http://speeddemosarchive.com/ for "real" speedruns (the rules are complicated, but often on original hardware, captured on video) and http://tasvideos.org/ http://tasvideos.org/ for "tool-assisted" speedruns or time attacks, meaning using emulators and often doing truly insane frame-by-frame optimization and memory-state-manipulation.