Check This Out!.

Ever had someone point out a mistake made in a video, that you never saw before even though you've seen the video like a thousand times over?
Look at Michael Jackson's video and go to (4:44) you will see a guy in a brown jacket mess up the choreography. My dad pointed it out to me a while back, and since then I always see that same guy mess up. It's amazing how you don't see things until someone points it out to you!