In a future post I will continue with the next 25 places (which- of course- could eventually replace movies from the list above; the (cumulated) differences among the first 50 positions are after all very small).
Update, 21st of March: As I stated also in the comments section below, as answer to some of the excellent suggestions (in this particular case, of Dan, who followed my example- I am contagious :-) - and published his own top of favourite movies), I discovered that I really left out one of my all time favourite movies and that was Leaving Las Vegas (IMDb entry, RottenTomatoes entry). So the changes are the following: Leaving Las Vegas enters on places 6-10; as a consequence, Eternal Sunshine of the Spotless Mind goes down to places 11-15, Crna macka, beli macor goes down to places 16-20, Donnie Darko goes down to places 20-25 and Good Night, and Good Luck is pushed on the immediate next level, thus I will enter it again when I will continue my top from position 26 onwards. It is very unlikely that I've omitted something else, in top 10 at least, among the movies that I have seen. Of course the most important list will be the one of "must see movies- greatest potential", which I will also publish in the near future and where the comments of my readers have been already very helpful.