Ask someone what the most exciting play in sports is, and you'll get a variety of answers: alley-oop, knockout punch, walk-off home run, penalty shot, Hail Mary. But for our money, it's when a gigantic basketball player goes chasing after a loose ball and — unable to stop his momentum — careens into the stands. We've compiled a supercut of the best flail-limbed moments in basketball history, or rather, whatever we could find on YouTube.