d3o padding
this looks promising... gel that reacts to hard impacts and realines it's molecules to form a hard surface. http://www.d3o.com/products.php?section=4 It's pricey and not available in too many places, yet. the motorcycle jackets look promising as does 661's pads.
my buddy saw it a mtn biking symposium and they were hitting it with hammers, said it seemed pretty amazing.
any one seen this yet?