2013 was a year full of impressive knockouts, and many of them featured the ultimate destruction of headkicks. Vitor Belfort knocked out three top-level fightters with headkicks last year, blasting Michael Bisping, Luke Rockhold, and Dan Henderson into oblivion.

Junior dos Santos' spinning wheel kick victory over "The Super Samoan" Mark Hunt also comes to mind, as does Travis Browne's insane come-from-behind front kick knockout of Alistair Overeem.

But none of those illustrious knockouts made the top 8 of all-time. The Ultimate Fighting Championship just released its "UFC Ultimate 8" list of top headkick knockouts. Watch Joe Rogan count down the best, and offer up your favorites in the comments below!