I often see home video monitoring system that comes with a DVR (hard drive video recorder), and several cameras with built-in IR LEDs. Usually the system allows you access from the internet, and the recording is motion triggered.
The major weakness of such system as a security device is the DVR can be removed by a burglar. Is there an easy way to set up a system where the recordings is stored offsite? This way at most the burglar can do is disable the system after he gets into the house, but he cannot erase the recording leading up to that point.