Kensington expert mouse (Score 2, Informative)

It's not a mouse really it's a trackball, and it's not wireless, but it is the best pointing device I've used for programming.

I like to keep my eyes on the code, and I use vim so I don't reach for the mouse a lot, but when I do I want to find it in the same place on my workstation every time. That's the best thing about a trackball, they don't move, the wires don't move and don't get snagged or tangled so who needs to mess with batteries or recharging. Give that ball a flick and the pointer scoots across the screen, so much better than doing push, lift, pull, drop circles with my poor old wrists.

Long time ago when I worked on Windows I used all four big buttons programmed for click, double click, hold down, and left click. Now I work in KDE, use the mouse much less, and almost never double click.

If you can find one get the old Expert Mouse. The new Expert Mouse Pro has extra buttons and a wheel and has suffered much cost reduction, it's is cheap crap compared to the original.

An important thing to remember, mice are for poking and hoping, exploring programs you have not seen before, when you know what you are doing working with a mouse versus a keyboard is like pointing and grunting versus fluent conversation.