I've always said: Given the time and the space a TKD-er can deliver a devestating blow to their opponent. Check this tournament video out.
http://www.metacafe.com/watch/76104/tornado_kick/
Come to think of it aren't head-shots illegal in tourney's?
http://www.metacafe.com/watch/76104/tornado_kick/
Come to think of it aren't head-shots illegal in tourney's?