Let the hive mind of Engadget get that for you.
"I need help! I want a small pocket camcorder but I'm not sure which one to get. I don't want to fall into the hype of the Flip because I worry two hours won't be enough. What should I be looking for when considering a small camcorder and where can I get a good quality one with expandable memory? Thanks!"
Yeah other than you already have coax cable probably going to most rooms in your house (and coax is cheap too). I wired my house with cat 5 and it's a pain in the butt. This is a good idea. I might use it to expand the network to other areas.