Chris Benoit was most famously known for his flying headbutt. As was Harley Race and a plethora of other legendary wrestlers. Sometimes, we've seen these high-flying maneuvers brutalize not only their opponents, but the person executing the move. Ramming your skull into another skull is always a risky proposition, but never has anyone truly decimated someone with a flying headbutt, not like this.
Take Tenzan from New Japan Pro Wrestling. These guys work stiff, but this is unlike any flying headbutt before him. This is the ultimate hard way.
Not sure if we should allow Tenzan to headbutt people anymore.