Profane Super Mario ranter plays hardest level ever

I've been sent the Mario Frustration video a couple times this week, but I kept watching it with the sound off and thinking, well, it's 23 minutes and 40 seconds long — how can this be worth it?

Then I turned the sound on. The anonymous, ranting, profane guy who plays this incredibly hard custom Mario level is possibly the funniest Super Mario commentator in the history of the genre.

Link

Update:
RubixsQube sez, "I'm a long time boingboing reader, and I just wanted to quickly point out that while I created the video, it was not me playing the game – I found the video originally on tuduo.com , a Chinese website, and then added my commentary over top of that – I really didn't expect this to get so big so I didn't add a little disclaimer on the video. Thanks for putting it up, I appreciate your compliments! I've updated the Google video details to reflect this, and I'm looking into putting subtitles on the end of the video in order to make sure that people don't think I'm stealing this – I look at it as performance art."