Though it may seem crude these days, Jordan Mechner's original Prince of Persia animation was state-of-the-art in 1989. But the method by which he got it is even more impressive. Mechner shot his kid brother, performing the moves he needed, on a video camera and then, using rotoscoping, plopped them directly into his game.
Now, you can watch the actual home movies and it's positively shocking how closely they resemble the final moves the prince was performing way back in the late '80s. Watch it just below the break and just try not to get a little emotional. Try!