A lot of people actually think this is real film footage of Bruce Lee playing ping pong with a pair of nunchucks. It’s not. It’s a Nokia ad for a Bruce Lee version of their N96!
It is entertaining nevertheless.
The person is not Bruce Lee but a Chinese national who has won multiple Bruce Lee lookalike contests in China. He is also a student of Jeet Kune Do.
The video was shot using a background sound of people playing ping pong so that “Bruce” and the ping pong player / players know when to “hit” the ball.
The ball was later superimposed into the video + sound and all.