Not having a sort by feature does not seem like a show-stopper. Prioritising features is difficult, and getting a site out and seeing how users interact with it is crucial.
My reaction: The site's design is incredible. Navigation is intuitive and the information easy to read / digest. Great job!
Suggestion 1: I think the homepage could benefit from a mission statement. Perhaps a thin, elegant banner located beneath the search and above the 'Recently Premiered SciFi Movies' header.
Suggestion 2: Add 'Latest Reviews' to your main navigation.
From my experience with edX, online courses are the Ferrari in your analogy.
1. It is easier to concentrate on a video of a lecture. My friends aren't sitting next to me, the recorded audio projects the information clearly, and noisy neighbours are no longer an issue. The recorded video means everyone can "sit close" to the lecturer, and the ability to pause, rewind and rewatch lectures means I'm more likely swallow it in it's entirety.
2. The ability to participate from any location and at any time means I'm never late and never hungover.
3. Getting your questions answered via email means it can be read multiple times verbatim. Plus the professor is likely to give you a more in-depth response when he can answer in his own time.
4. My couch, lounge chair, and bath are more comfortable than the lecture hall chairs I've sat on in the past.
I feel it's more appropriate to liken online courses to the electric car. They are a more efficient use of resources, and we'll need them if humans are going to overcome the (frighteningly) vast array of current and future problems.
When I'm in a rut I grab a notepad, go for a walk and only let myself return after writing down 5 observations.