Personally, I think Brutal Legend would be perfect; think of all those metalheads with long hair. It seems like almost everyone in that game has long hair. Although, maybe that's a bad thing; that many people on screen at one time with long physics-y hair would probably cause things to run at 60 SPF (second per frame).
None because the hair doesn't look realistic at all. Each individual hair looks like its made of light funky material that makes it flip flop with the other hairs whenever Lara makes a movement, I'd rather have the hair supposedly tied and moving as one piece rather than seeing the freaky unrealistic physics of each hair bobbing in outer space