I saw an article on slashdot about Apple’s human interface guidlines for people used to application design in windows, it’s a kinda neat article, and describes some things I had always just noticed subconsciously. Mac dialog boxes use verbs as buttons! not “Yes” and “No” but “Save” “Don’t Save” and “Cancel”… It’s all the little things that you barely notice, but really make you feel more comfortable and productive.
update: if you saw the previous link i’m sorry… kinda funny considering the context… or horribly sad…