You think playing one Meshuggah song is hard? Try playing a medley of 86 of 'em, all mashed together into a confusing jumble of shifting rhythms and tempos. That's exactly what guitarist Greg Desmurs did for his History Of Meshuggah video and it's nothing short of incredible.
Desmurs notes in the video description there are a "few mistakes here but it's way too long to record again." Dude, you recorded 86 Meshuggah riffs in one take with no breaks. A few mistakes will go unnoticed.