I like body paint. I'm not talking about the kind of deal where they have a girl just smearing paint on herself making a mess. There's a certain appeal to that, but it just doesn't have that "I gotta save this" impact. I'm talking about careful, well-done artwork. Tattoos are good, too, when they cover large portions of the body, but personally, I prefer paint.
Anyway, here are some examples:
http://www.funnydaze.co.uk/funnies/body%20paint/index.htm
http://libai.math.ncu.edu.tw/~shann//Teach/liberal/CMW/body-paint/
http://irachus.free.fr/photo/bodypaint/page_01.htm
http://inluminent.com/imagine/w_RJWbodyPaint1024x768.jpg
http://www.lovelifeandlaughter.com/album/pages/body%20paint_jpg_jpg.htm
Any more?