Display original year of release, not the US year of release.
I have encountered several non-US films (which seldomly have their original title in the database, another issue which might need work), which had weird release years, sometimes decades apart from its original release year, just because these films happened to have a very late US release. Please do not pick the US release year as the default release year.
We will change this behaviour when we migrate to the v3 API, which we’re planning for now.
I noticed this when looking at 'Only Yesterday', a movie originally released in 1991 (Japan) that only in 2012 had a "release" in the US.
While I'm unsure which TMDB API version the site uses, it looks as though the necessary information is available in v3: http://help.themoviedb.org/kb/api/movie-release-info