Just watching a Discovery TV show called Time Warp where they use ultra high-speed photography to see how things actually happen.
I don't know if they have applied this to pool yet, but it would be interesting to see them do this with trick shots or masse' shots. I would love to see some of the great masse' shots slowed down so you can see what is really happening (think 2000 to 10,000 frames per second).
You can suggest things for episondes at: www.discovery.com/timewarp