A little curved would be good, too much (like the original ergonomic keyboard) is awkaward IMO. The one Craig mentions looks like a good design, maybe it's the same one you're referring to.

>The single most important thing in a keyboard is that it be curved, so that you don't have to twist your wrists when typing. (Actually, that is relevant only if you do ten-finger-typing, really or "sort of". If you work with two fingers, it won't make a difference if you use a "flat keyboard".)
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>I would recommend the Microsoft Natural Keyboard. I bought one recently, and it feels really well.

>>Does anybody have a keyboard they really like? I'm not talking about bells and whistles like multimedia buttons or wireless connectivity and such -- a conventional 101-key layout would be just fine -- but what I'm looking for is one with a good tactile response and key action that isn't mushy, wiggly, noisy, or otherwise weird and annoying during heavy use. In other words, something you can touch-type on all day and not feel like it's slowing you down or wearing you out. Any recommendations?