Big time props to Tracy Lee for Cagewriter.
According to "The Spider" we can all thank Steven Seagal for this one, who apparently taught it to the middleweight champion and practiced with him in the back before Silva went out and actually landed it on "The Phenom." Can anyone think of a knockout more spectacular than this? Check out a gif of the already famous front kick after the jump:
Thanks to Zombie Prophet for the gif.