To all you moaning gits...
...evolve or die. Power PC's can't be supported forever, after all this isn't Windows XP - thank fuck. The 64 bit Snow Leopard will become the professionals choice of OS. It allows backwards compatibility with 32 bit software thus allowing for a gradual third party software upgrade path and allows for more efficient use of GPU capabilities.
Windows is a fucking joke in comparison and don't even mention Blu-Ray, downloadable HD content is the future (just have a look at whats happening with the Xbox and Sky this year) DVD's, like CD's, are almost history.
Oh sorry you can't play games on it, get a console. Mind you SIMS 3 seems to be pretty good on my iMac.