I think I need a new mouse. Maybe one of those "ergonomic" ones, because my right hand hurts on both sides where I tend to grip my mouse. (This is in addition to my left hand, which hurts because I tripped and caught myself mainly with my left thumb.)
I'd go back to using my GlidePoint, but it's difficult to play first-person shooter games with it, and Nerdvana is coming up in a couple of weeks. I'm not going to spend an all-weekend LAN party getting shot to smithereens because I'm moving around awkwardly!
I've heard good things about trackballs, though. On the surface, they seem ideal for gaming (not to mention requiring a smaller footprint on the desk, which is always beneficial if you tend towards clutter), but because of the funky way I set up my game controls, I'm not sure how well a trackball would actually work. Time to go down to CompUSA and test-drive a few different models, I guess.