Integrate Streaming Services
If a movie is available on any streaming service (Amazon, Crackle, Hulu, Netflix, etc.) provide a button on the movie's page to watch it on the service of the user's choosing.
I kinda like that idea, but you must realize that it can get incredibly tricky to implement - and I think that ultimately that may prevent it from happening. Let me explain:
First of all, what is available for streaming where and to whom changes regularly as deals with studios, distributors (etc.) come and go. What's available on Hulu one month may not be available the next, so this would have to be something that was automatically updated.
Secondly, not all things are available everywhere. Hulu, for instance, is only available in the US (at least as far as I know) and I think the same applies to Amazon VOD. Netflix is operating in several countries, but they only have some things available in some regions (a title may be available to Netflix subscribers in Canada, and Latin America but not the US), so I'm sure you can easily imagine the frustration people will experience if they see a "Netflix" button (or something like that) on ICM only to find out that it's not actually available where they live.
So, I like your idea, but I just don't think it'll happen, at least not anytime soon.