I was watching the fight featurette on Batman Begins yesterday and they were talking about the Keysi Fighting Method (KFM) being used in that film, and how it hadn't been used elsewhere. Then I recalled that in The One, the two different Jet Li characters use different styles (and in many of Li's movies the style is tailored to the character).

Then I got to wondering if anyone uses tags to track the different martial arts systems in their movies. I currently don't (and not sure if I will), but it seems that with a large enough (martial arts) collection it would be worth doing. The only system (apart from KFM) I can name and associate with a movie without looking it up is Muay Thai, which Tony Jaa uses in Ong Bak.

Clearly, fighting system / style can have an important impact on the appearance of a fight... so does anyone track them?

Edit: Chatting with a friend about this, I realised that as well as different systems, there are also different styles within some of those systems (things like "crane palm").