My good friend Trista showed me this video when she was in town last week. I think I will use it for every methods class I ever teach.
There are two groups of people in the video, one passing a basketball from chest-to-chest, and the other using bounce passes.
The first time you watch the video (24 sec), try to count the number of chest passes. This will be difficult, as the players are constantly in motion, sometimes occluding other players.
Watch it a second time, this time trying to count the number of bounce passes.
Notice anything odd? Watch it again.