What is Speedruns? In short this is a challenge to see how fast you the gamer can run through a game in the fastest time.
To the unaided this might seem a Redbull induced/high on drugs buzz kill of a game challenge. The premise is simple, given the in game glitches/tricks some people can run through a stage really fast and in the fastest time. Record your run so others can see your accomplishment and root for you. (This gamer is not one of them, but i do enjoy watching people make the runs).
So you're thinking,"Yea, i can speed-run that (insert game name here)" but before you get all boastful, have a look at this speed run then you be the judge.
Game: Super Metroid
Console: SNES
Bots/cheat programs: none used
Time: 0:32 mins
http://speeddemosarchive.com/SuperMetroid.html#100Single-segment 0:32 by Satoru Suzuki.
Watch and be amazed...
Seriously, you have to be hardcore to do such runs, or in this case, Parkour.
This and many other Speed runs can be found here:
http://speeddemosarchive.com/