Amazon's Unbox service, once the bane of our very own CNET reviewers, has come a long way. The service lets you download movies and TV shows to watch on your PC or portable device. Through a partnership with TiVo, you can also rent and watch the movies on your TV without a computer if you've got a compatible TiVo device hooked up to the Internet.
What makes the service especially cool is its RemoteLoad feature, which lets you buy and download a movie to another computer. It's a distinctly competitive advantage to systems that require users to be at the computer or device they intend to download, meaning you can start downloading a video to watch at home while still at work.
Winner: Amazon Unbox (Amazon.com)