The main appeal is that it's not just a great sculpt on a commonly available body with common accessories. It's the whole shooting match, body, outfit, head, the lot and each has it's unique quirks. You can never accuse Bruce Lee of being generic!
CHEERS!
Thanks for a decent answer Rogerbee. I do like the look of some of them. Mainly the ones with the rubber body's. Looks very realistic. I really have to get round to watching some of his movies. Maybe then I will understand the popularity surrounding these figures