The Byte article Flirting With Mac OS X by Moshe Bar seems to suggest he's now having a fully fledged affair ;-) He concludes:

"If you have been using Linux for some time and just love its stability and performance, and find it a natural platform for development, you'll feel right at home on the Mac OS X. On the other hand, if you feel at times frustrated by the difficulty with which modern devices (like wireless, DVD, or FireWire devices) work on Linux, then you might find Mac OS X to be what you've been longing for. I for one, am convinced: I am switching my laptop to Mac OS X. And best of all, you don't have to be ashamed to go to a Linux guru meeting with Mac OS X, because it's just a UNIX with a very nice GUI."