It also has a "season pass" (or season link if you're a Sky+ user) feature, plus 60 minute buffer. I have a link to another forum where one of the testers has put up some information if anyone wants to it. I'm happy to post the link if the forum rules don't prohibit that.
If the TVDrive is destined for ntl users, post Telewest/ntl merger, I would suggest that it would be a significant addition to the entertainment portfolio. Though I hate being cynical - providing the merger goes ahead - the TVDrive PVR (which I think is critical to any television entertainment strategy) is more likely to see the light of day quickly for customers since it's not being driven by ntl strategy...
btw thanks for the welcome King of Fools