Some one finally made a mod that adds hair physics to the game. You can now make a character with a pony tail hair do and the pony tail and some of the hair around the face moves when the character does. Apparently there is a mod, some where, that does the same for skirts. I have not found that one yet even though I have been looking since I saw it in a video.
Here is a link to the video.
http://www.youtube.com/watch?v=L5NBFL0fpRY&feature=share
And here is the link to the mod for the game.
Skyrim Hair Physics Project by xp32 http://www.nexusmods.com/skyrim/mods/47000/?
The Hair Physics Project mod works. I have it on one of my characters.