Medieval European swordsmanship has the advantage of a number of contemporary training manuals, and recently there's been something of a revival as people have been attempting to recreate the techniques depicted in the manuals. Another recent development is the explosion of motion sensors in video game systems, as evidenced by the Nintendo Wii, Playstation Move, and Xbox Kinect. Naturally, sword games are a great fit for these systems, as they naturally have a lot of movement. Unfortunately, realistic swordplay, based on reconstructed techniques, is much harder to find. That's something I'd be very interested in playing.
Me and Neal Stephenson, apparently. Neal has gotten behind Clang, a Kickstarter project to develop a computer game based on incorporating Medieval sword fighting techniques. Kickstarter, if you're not familiar with it, is a way to raise money for creative projects. People pledge money and, if you reach your minimum funding goal, everyone's credit card is charged for their pledge, and the project receives the money. Unfortunately, with only three days to go, Clang is still short of their goal by $70,000. I'd hate to see this project fail, but I've already pledged as much as I reasonably can. So instead I get to pester other people into giving.
So, if you're at all interested in Medieval swordsmanship or computer games, take a look, and consider pledging.