I had a discussion with a guy studying IT (the son of one of the most wealthy men in adelaide) one night. I told him about appletalk, and he freaked out saying how macs suck, nothing is compatible with them and they're a waste of time. - oh, and how unix is sooo much better.
So for the next twenty he heard all about darwin, OS X, pricing, and the rest. I rebutted his every point and he still argued. Fortunately, i'd convinced his friends who were now backing me up.