This is one issue that has always annoied me about Apple. Why do they continue to persist with the single buttoned mouse. I loved the sexy black one that came with my new 933 but I put it on my fathers iMac and added another silly round single buttoned mouse to my collection. I now have 9 of them in a box.
Perhaps the new found support for second buttons and wheels is a sign that Apple will issue them with as standard sometime in the near future.