Macs aren't really designed with games in mind, although they are getting more and more games recently. And as far as I know, 3D animation is still done on PCs or even SGI systems.
Macs are the industry standard for Flash, Photoshop ect. work though, since they make for a smoother work flow and display nicer colors. The next computer I buy, most likely will be a Mac, for this reason.
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Poop.