Studies have shown that the input devices we manhandle daily are crawling with bacteria (though, it should be pointed out, not as many as your average desktop or telephone). As a result, companies have come up with a variety of ways of dealing with these germy peripherals.
Seal Shield has introduced a new line of waterproof keyboards that can be easily cleaned, simply by scrubbing them with soap and water. This feature alone is nothing new, but the company goes a step further by making them dishwasher-safe. Seal Shield products (they also carry mice and USB drives) are being marketed to medical establishments -- where bacteria running amok is a life-threatening concern -- but there's no reason clean freaks at home can't use them.