There are some sounds that the human voice was just never meant to produce. And yet, this guy does it anyway - and it's awesome.
You remember back when you watched movies that featured Michael Winslow, like Police Academy or Spaceballs, and you were just blown away by the sort of sounds that the guy could make just using his voice?
Yeah, the above video is pretty much that. It stars an incredibly talented Japanese beatboxer by the name of Hikakin as he covers his way through some of the most iconic Mario Bros. songs. He provides the percussion, he provides the melody, he even provides the sound effects. It's incredible.
I don't have any proof, but I'm pretty sure he's a robot.
(Thanks to ckeymel for finding this one!)