I've been playing around with Ubuntu lately and I really like the animations that it has for windows and such. It's even cooler if you get the application to customize said effects. In particular, I like the ability to make windows fade in and zoom in slightly when they're opened (like Aero does in Windows Vista and 7) and to do the opposite when they're closed. Is there any way to have a similar effect in Mac OS X? I'm running Snow Leopard, by the way.