This video clip purportedly showing actor and martial arts master Bruce Lee playing ping-pong with nunchaku is a digital creation intended as a viral advertisement for the Nokia N96 Limited Edition Bruce Lee cell phone, produced in 2008 by the Beijing office of the JWT advertising agency. The video employed a Bruce Lee look-alike actor pretending to play ping-pong against an opponent, their movements sychronized to the sounds of a genuine table tennis match, with the final audio and the visual image of the ball being added to the clip in post-production.
http://www.snopes.com/photos/advertisements/pingpong.asp