My latest weapon design, Drake's Fang... the only weapon i've actually bothered to put through photoshop, and I thought it looked pretty good...

Drake's weapon of choice, it hangs in its sheath diagonally across his lower back, always close at hand, its weight perfectly balanced and the part just before the blade is the gravity point.

Overall length is about 3 ft, 1.5 for each the handle and the blade.
Weight is about 10 pounds, entire weapon is made of one piece of metal, and the handle is secured with grip tape to ease wielding of the weapon.