IMDB and Rotten Tomatoes have public ratings and critic ratings. Whenever there's a big gap between the two it usually means a film is either very pretentious and too esoteric for regular audiences, or its too formulaic and derivative for critics to give it a decent score but it's entertaining.
Presenting, the Pretentious-O-Meter:
Pop in a film name and find out whether it's pure cheese or sophisticated fromage
Are very welcome. Fork away and make a pull request when you're done. I'll try my very best to accomodate it! Check out the list of issues for some ideas on what to implement. Nudge-nudge-Autocompleting film names-wink-wink.
The software is licensed as CC-BY - go nuts, just make sure you link it back to me http://creativecommons.org/licenses/by/3.0/