A keyboard and mouse, virtually every computer is controlled by this combination. Of course, while the keys and buttons are common between different input models, there are certainly better designs for the purpose of the computer it is controlling. Be it a gaming PC, a media center or just a plain old standard PC, there is keyboard and mouse which is the perfect fit.
ExtremeTech has two good articles which outline what model might be best suited for what purpose:
Each article breaks down the respective device by several categories and gives a review of each. One thing to note is price doesn’t really seem to be a consideration. Depending on the use, however, sometimes the cost may well be worth the design.

Jason Faulkner is the man who brings you our daily tips. He is based in Atlanta, Georgia.
I don’t care what anyone says. I’ve found my computing soul mates in the aluminum Apple keyboard, and the Logitech MX500 mouse. As long as they don’t break (the mouse, at least) I’ll be set for life!