We set up cameras at my shop that are available on the web either through software or the internet. It works pretty well but I never watch at home as I have better things to do. I use the cameras as back-up if I suspect theft through other audit methods we use at the shop.
One of our customers has a cool, inexpensive security camera setup that he can access on the web. It’s called LukWerks – He just goes to a web site, logs in and has control of the cameras just like he’s in the store.