Apple Remote and MacBook Air
I went back to check and I could find not one Apple document (no Help document, no KB article, no techspecs page) that specifically lists whether or not a particular Mac supports the Apple Remote. If I wanted to find out about a particular Mac, the best I could do was determine this by omission. If you go to the Apple Store online to buy the Mac and the Remote is not listed as an accessory, you can assume it doesn't work with the Remote.
It seems to me Apple can do better than this. Shouldn't they have some KB article that lists the Macs that do and do not work with the Apple Remote — or otherwise indicate this so you are less likely to be surprised after you make a purchase? Even the KB articles on how to pair the Apple Remote make no mention that this information is not applicable to all Macs.
Mac Pro (2009), Mac OS X (10.6.6)