First and foremost, I would like to say that this slideshow is part of Harry Smith's "The 10 Greatest..." series.
Now, any fight fan knows that one punch can change it all. It can turn a losing affair into a highlight reel knockout. But in MMA with the variety of punches, kicks, knees and elbows, the window of opportunity for a single strike—although possible to be the finishing blow—is not all that common.
That is why this list counts down not only the few great single strikes in MMA, but also the greatest flurry of strikes or combinations.
And because this is MMA, ground strikes will also be included.
The criteria for making the list includes not only effectiveness, but also frequency. Meaning if it's a one-strike-wonder, it does not make a very strong case for itself.
So, without further adieu...