I'm not necessarily a big RPG guy but this caught my attention--
I think this is about a 9.5 on the old awesome meter. It is ten bucks, a little pricey for a die, but the the RPG geek cred you rack up is worth the cost.
Without the die this guy is just a dude with his mom's dish towel wrapped around his head.
You can own this piece of RPG Nirvana here: http://www.thinkgeek.com/product/deaa/