If you have ever seen a fight between two martial artists, they look like they can fight at extraordinary speeds. But they can't actually fight that fast. Instead, the cameramen are speeding up the frames, or "fast-fowarding", the actio scene to make it look fast.
This wasn't the case with Bruce Lee. It is said that if you have a coin in your palm, and you try to close it, Bruce Lee could take the coin before you close your palm! When he was making movies, the camera men had to SLOW down the frames so that Lee's moves were visible to the audience. That's how fast he was!
The next fact will be posted 12/5.