Remember Guitar Hero. You thought you were the greatest guitar player in the world, unless you actually picked up a real guitar. We all spent 18 hours straight, chugging Mountain Dew, trying to master a really hard song while shredding away on the plastic guitar.
One man, CarnyJared on Youtube, seemingly 15 years after we all cared about the game... actually got a perfect 100 on the insanely high-level song, "Soulless 6". You can't even see his hands move, they're going so fast.