What was the the most academically influential video you saw as a young child?

I spent the evening tonight going over great math videos with my wife and daughter. We looked at the most recent videos from Vi Hart, and I was happy to introduce to the both of them the "Powers of Ten" video by Charles & Ray Eames - somehow, I was lucky enough to have been introduced to this video while I was in nursery school. I just recently realized how influential this video has been during my whole life.