Some years ago (it was in 2010, and I wrote about it in Bosnian) I have created a so-called "Dino's ultimate (not quite finished) film list" for a colleague from the previous job. It was written in Danish, and it looks like this:

Comedy

Big Lebowsky, Annie Hall, Amelié

Drama

A Room With a View, Gosford Park, American Beauty, House of Sand & Fog, Secretary, Nuovo Cinema Paradiso, The Remains of the Day, The Hurt Locker, The Kite Runner, Into the Wild, Secret Passage, Das Leben der Anderen, Good bye Lenin, Doubt, Caos Calmo, Barry Lyndon

Thriller

Godfather I-II, Match Point, The Talented Mr. Ripley

Aesthetics/psychology/philosophy

What Dreams May Come, Fight Club, Mangolia, Eyes Wide Shut, Big Fish, Choke, Dark City, The Man From Earth

Sci-fi

2001: A Space Odyssey, District 9, Solaris (the Russian original), Stalker

3 Documentary

De fem benspænd, Zeitgeist, Zeitgest Addendum, Why We Fight, Collapse, Mit iranske paradis

Non-Western films

Lemon Tree, Turtles Can Fly, Battle of Algiers

If I was to create an updated list, there would have been a few amandments. I might to that soon. Until then, go and watch those films from the list you haven't already.