I will not say very much about this, but just post it for your enjoyment.
It doesn’t really have much of “is it true?” in it – it’s just too unreal. But it has a lot of “it would have been cool if it was true!” which makes people pass it on. So far more than 1.545.000 have watched one of the uploaded clips in about 10 days.
There is also another one where Bruce Lee lightens up matches with a nunchaku.