I do. I have one front camera and one rear camera hooked up to a switch, fed into one of my TV's. Honestly, it's useless. It records onto VHS and it's a PITA because everyday you gotta rewind the tape or put in a new one. I got my cameras from the Spy store on kingsway near metro across from the safeway, lol. They were ~$100 each.
In retrospect I really wish I got wireless wifi cameras (they hook up to your router, and you can view them from your iphone/android) and they have tilt/pan functionality. If i was you I'd get wifi cameras with tilt/pan off amazon.com. They come with software that lets you set up recording on a computer + you can view them remotely. That's what I wish I got
As far as installing them goes, unless you like to go into your attic it's a pain. I was walking around on the trusses for a good hour trying to fish the lines into place.