Mice

Microsoft SideWinder X5 Mouse
Microsoft's pared-down SideWinder X5 Mouse is supposed to offer PC gamers a lower-cost version of its award-winning higher-end model. Instead, it comes across as flimsy and overly stripped down. Other mice deliver better control for the same price.
Specs: External, PC, USB, 2000 dpi, 4 pin USB Type A, Mouse, Wired, Laser, Black

Logitech MX 1100 Cordless Laser Mouse
Logitech's MX 1100 wireless laser mouse is the best in its class thanks to a wide array of features that make navigation easier. You have to pay for all of that capability, but anyone who puts serious time in front of a PC will appreciate what this mouse can do.

Macally Turtle - mouse
Macally's otherwise unremarkable Turtle laptop mouse at least has the good sense to keep its USB cable out of sight, thanks to a retractable cord.
Specs: External, PC, Mac, USB, 800 dpi, 4 pin USB Type A, Mouse, Wired, Laser

3M EM500GPS Ergonomic Mouse (small/medium)
The 3M EM500 Ergonomic Mouse requires some adaptation, and it offers only the most basic mouse functionality. But the payoff is a more comfortable mousing experience.
Specs: External, PC, USB, Mouse, 4 pin USB Type A, 6 pin mini-DIN (PS/2 style), Mouse, Wired