In basketball being able to breakdown and stop is almost as important as being able to start quickly. If you think about it, the quicker you can stop the longer you can run faster for before you have to stop. Also, a great way to get past your defender off of the dribble or to shake a defender that is guarding you off the ball, is to be able to stop and start quickly.
Well this kneeling stops drill is a great way to break down the motion of stopping, as well as teach you the right technique for the movement. Really follow the steps closely in the video though, and learn the correct motion before adding this drill to your basketball training plan. Otherwise you are going to be doing more harm than good, because you will be practicing it the wrong way.