uControl gives you the ability to take those useless keys, that you're certain would have been better fashioned as something else, and turn them into something useful. It started out as a simple hack to remap the caps lock key to a control key, but has since evolved into a fairly sophisticated means of not only remapping modifier keys, but giving your trackpad a virtual scroll wheel, or giving lefties a sensible mouse, or giving people with disabilities the ability to type with one hand.
