It could be if you didn't have to pay for XBox live to connect to the net. However, if you're not a (social) gamer, XBox live offers no benefit over a straight internet connection and costs $60/year.

As soon as my year is up, I'm moving back to a PC for streaming Netflix, and if I'm doing that, the PC might as well play all my local media as well so the XBox is going to be a games-only platform.