I type a lot each day and luckily for me I have never had any issues with repetitive motion injuries. Not everyone is as lucky as I am though and injuries like carpal tunnel are common for people who type a lot each day.
An ergonomic keyboard is a good way for typists to avoid or treat injuries from typing. Smartfish has unveiled an interesting ergonomic keyboard at CES called the ErgoMotion. The keyboard has keys angled for each hand and the keys can be moved further away from each other if desired.
The angle of the keyboard can also be changed. The device works with both Mac and Windows computers and connects via USB. The keyboard will ship in March 2010 for $149.99 and looks pretty cool to boot.