One very lucky, and very stupid motorcyclist.
It is absolutely the responsibility of every driver on the road to watch out for motorcycles, but a bit of situational awareness on the part of this motorcyclist would have kept him off of YouTube for his unintentional acrobatics performance. It looks as though the motorcyclist in question was trying to beat the light, because it was only just red when he ran straight into a car at full speed. The impact sent him flying, and sent the car into the car next to it.
In a bit of good luck, the motorcyclist lands between the two cars, which keep him from falling onto the marginally more unpleasant pavement.