Generally speaking, speed runs fall into one of two categories: "That's completely nuts" and "I should feel bad for ever trying to play this game." Most speed runs can be classified as the former; incredible displays of memorization and timing that reduce hour-long sequences into minutes. They're fun to watch, and sometimes even educational.
Speed runs like SexyShoiko's Dark Souls play-through, however, make us ashamed of the countless hours we've painstakingly bled into this unforgiving beast of a game. Over a series of seven YouTube videos (part 1 above, 2 through 7 after the break) SexyShoiko manages to topple the entire title in less than an hour and a half, which is completely bewildering. We'd call him/her a masochist, but that term seems inapplicable to someone who is quite clearly the master of their own domain.
[Thanks, everyone who sent this in!]