Wow ! this is fantastic ! say if you have more than one tab open in safari. and you press quit. you know that little box comes up "are you sure you want to quit?" I just discovered that wherever the mouse is on the screen it will move to the quit button, so you dont have to move the mouse to click it. i believe this is the case for other things, empty the trash etc... Give it a try! EDIT : its only safari. have 2 tabs open. hit command Q.