I think Mac is a vastly superior platform for digital movies and photography than stock Windows. Yes, you can buy additional software for the PC, but if creating anything--movies, photographs, books, Web sites--is driving your decision, Mac is better.
I have seen Mac computers but I'm working with a Windows platform. Most people are comfortable with what they know. With most of the medium community just getting to know Windows, I think that most will not want to learn a Mac. I'm trying to make up my mind if I'm to purchase one in the near future, since I do lots of graphics.
Thanks for all the info you can post about the Mac.