This is good news, you can now access Amazon Unbox directly from your couch and buy/rent movies using your TiVo remote. You have to set a PIN here, and enter that PIN whenever you purchase anything. Of course, you will have to wait anywhere from 15 minutes to an hour before your entire movie gets downloaded, but it sure beats running to a computer anytime you're thinking of wanting to download something to your TV. Not even the AppleTV allows for direct purchases and downloads from the couch.
Screenshots after the jump