Last week’s mac techmail was Turn your Mac into a security surveillance centre which discusses the SecuritySpy software and using it to watch the feeds of remote video cameras. Very cool stuff, and shockingly inexpensive (the cameras I got now monitor the exterior of the house, and they were about $100/ea). Nothing super fancy (pan/tilt/zoom would be nice, but this was mostly a trial and I have a budget to maintain), but works quite well and SecuritySpy is quite slick.