Well I'm not the sad anorak - my landlord installed it as he lives there as well! (it's a very very big house with 8 people living in it). Can't grumble though, at least I feel safer leaving the car outside the front.
i'd have cctv outside my house if i parked it outside. i sometimes set up my webcam by my window. (makes me sound like a perv but i aint) u can get them for about 60 quid from wickes and they turn on automatically when they sense movement i believe.
I was warned to keep my cc under lock and key a few months back. Breaking into a house for the car keys is the biggest problem now, plus they'll do it if your in or out.