Finally I have stopped procrastinating, and repaired my broken mouse. The cable must have had a break in it where it exited the mouse, so I've shortened it by about 5cm and resoldered it. I know it's an ancient mouse but it now works again and it's saved me the hassle of buying a new one. Also it saves it from adding to some landfill site somewhere.
At work I use a Logitech MX1000 laser cordless mouse, and as soon as they do a bluetooth version I'm getting one. It'll work great with my PowerBook and I won't need the USB docking station thingy.
Currently listening to: Speak To Me / Breathe from the album "Dark Side Of The Moon" by Pink Floyd. Wasn't it great to see them back together at Live8?