Neflix is a great investment. Tons of TV season on there.
My wife has forced me to watch a lot of movies lately that I had zero interest in and usually they aren't bad. However, some have been horrible. Just depends......
I just watched "The Missing" and it was pretty decent. Nothing earth shattering, but a good watch.
You can always go to netflix and search the "instant queue for something to watch. They don't show their entire library on xbox. You can also go here and add movies to your instant queue:
http://instantwatcher.com/