Marco-
Hello Wikipedians, I'm the OpenFilm project coordinator.
OpenFilm is a Open project which aims to create a system like Wikipedia but for the movies (an open imDB I could say...).
Think more abstract: http://meta.wikimedia.org/wiki/Wikidata
This is not just fantasy stuff, these people are already doing it: http://jot.com/ http://weblog.infoworld.com/udell/gems/jot.swf
I have a Jot beta account and their system works quite nicely. You can easily apply forms to a page to define which data it can accept. You can then do systematic searches and reports on this structured data.
A data-enabled wiki allows for applications far beyond just movies. An open database of creative works of all types (books, articles, papers, journals, films, games ..), for example.
My invitation to you is, instead of setting up your own project for one specific purpose, work with us to make Wikidata a reality. Contact me and I'll let you know how you can help.
Regards,
Erik