Power Macintosh Easter Egg -- Mike Basham <email@example.com> has reported the first Easter Egg for the Power Macintoshes. First, make sure no debugger is loaded. Hold down the interrupt switch while turning on the Power Mac, and then let up. The Power Mac will crash, accompanied by some, shall we say, realistic sound effects, complete with breaking glass.
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Multi-Monitor iChat in Snow Leopard
In Snow Leopard, on a multiple-monitor system where you're using screen sharing over iChat, dragging the tiny inset preview of your own screen to another monitor shifts the remote screen to that monitor.