Hmm funny, I have just ordered one of these;
£50, connects to a TV via Scart/component, and another source such as sky/virgin/dvd player. It can use USB devices and a network PC or NAS.
I'm trying to find out if it's worthwhile converting all 500+ of our DVD's to AVI files and sticking them on a NAS to view.
At the moment it's just too time-consuming to find a particular DVD.
If it does work then I might try using ISO's instead - though of course we would have to sit through all the trailers and anti-piracy rubbish.