Out of curiosity: what tricks and ploys do you think it pulls, beyond the "I'm a Mac" ads?
As for the "I'm a Mac" ads, they are not that bad at all.
Disclosure: I own an iPhone and am madly in love with it. I also own a new iMac, and love its looks and would like to make OS X work for me, but have not been very successful at that. Perhaps because I am just used to Linux.
The operating system is absolutely the most advanced. The fact that it gives you so much power without any tinkering is stunning. Corner-window commands, the vast keyboard commands, and the incredible efficiency of Spotlight are my favorite quick things to point out.