One of the other programmers moved on for greener pastures last week.  Another programmer took his old cube, since it has a window.  I took his mouse.  As you can probably tell from the title, it's wireless.

So far I'm non-plussed.  There's no thumb button that tells your web browser to go back, and the scroll wheel is frustrating- it feels like the wireless connection just drops scroll actions now and then.  Of course, it's still less frustrating than my old mouse, which would actually go backwards nearly as often as not, so I'm keeping it for now.