#3 The Diamondhead
It wouldn’t surprise me in the slightest if you have never heard of this wrestling move. After all, it was only ever used once, and was retired after that.
A former WWE writer just went after JBL for his comments HERE
Here’s what happened: Japanese pro wrestling legend Kenta Kobashi announced in the lead-up to this match that he was going to debut a new finisher. He was going to use it for the first time in a match against Yoshinobu Kanemaru, and this would become his new super-finisher. The move was supposed to be some kind of Powerbomb lift dropped into a DDT (which we can only imagine would be downright terrifying, even if it was done correctly.)
When the time came to actually execute the move, something went wrong between Kobashi and Kanemaru, which resulted in Kanemaru being spiked onto the mat with unrelenting force.
The Diamondhead, which was the name of this new super-finisher, has not been used since.