Look at how straight, natural and unstressed the wrists and shoulders are using one of these. I can't believe this isn't the standard keyboard everywhere. Are we really so stupid that we're willing to destroy the joints that allow us to type (and thus, make our living) just because it might make our keyboard look a little funny? Even better than the ergos, though, is the fact that this kb doesn't have that @#$%ing obnoxious number pad that makes it impossible to position your mouse comfortably! If you really think you need one (and when WAS the last time you used your keyboard's numpad?) it could be put in the middle of this keyboard between the two halves. The only problem I see with these is the price - I refuse to believe that $300 worth of parts and labor went into one.
(Spotted on bramcohen.)