Typing all day long can put a great deal of strain on your wrist (I call it "Giz-wrist) so peculiar-looking keyboards like this Kinesis Freestyle might not be such a bad idea to look into. Kinesis has two models up its sleeve, the Freestyle Solo and the Freestyle Incline with VIP package. The difference between the two is that the latter comes with a little incline to raise the keyboard to an optimal typing angle. The keyboard should work with pretty much any operating system under the sun when it comes out early next year.
Don't stop with just ergonomic keyboards, though. Why not throw in a laserized Microsoft mouse and megacool ergonomic mousepad? Yes, then you'll the coolest guy at the office. Too bad your coworkers will ceaselessly tease you.