Not really edged dedicated as weapons but interesting.
http://nymag.com/strategist/article/...ry-review.html
We do have in the kitchen some significant classic chef's knives and Chinese cooking knives which are pretty fierce.
Best knife is Global G-2 Chef’s Knife 8” .
If you want one for 1/10 the price. Kai for Williams-Sonoma Santoku Knife