Unfortunately, you probably could have gotten more mileage out of them before the movie launched. Its going to be tricky because your window for big bucks for these domains is closing rapidly. What I would do is crab phpbay lite, which is a free wordpress plugin. And I would just turn it into a movie merchandise site.
Sell anything that is related to the movie and use that site to help launch future products. Now at the same time, I would keep my ears open to see if there will be a sequel. Probably not, but they did make Superman 4 and Rocky 5, so you never know.
Anyway the key to domains like this, and seasonal domains, is you have to start working it as early as possible.
Or you could try selling the domain on DP.
***Disclaimer*** I reserve the right to be wrong and be corrected by someone more knowledgeable than myself.