I would hope swords and spears aren't illegal because my martial arts master and half of the other students would be in a lot of trouble. I prefer to have weapons I can use instead of decorative ones though there are a few I've been tempted to get. The replica Master Sword is pretty neat, though I always thought Link's Gilded Sword from Majora's Mask looked better than the Master Sword.
That's funny that EA went and did that with the brass knuckles. Butterfly knives and switch blades are also illegal in a number of states. My roommate collects knives so we keep tabs on what is allowed in what state since we live in Portland, Oregon but he visits folks in the Sacramento, California area and I visit a lot of family in the Seattle, Washington area so between us we need to be familiar with three different state's weapon laws.