i cant believe those are old movies...
anyhow i do like some old films, specially if they are old enough to feel human, but alien at the same time. some classics like "Man with a movie camera" keep getting better with age, you can watch it on youtube. look for the version with the Cinematic Orchestra soundtrack.
something like "The Women" tt0032143 can be a good watch for a weekend afternoon with a gf. or "Das Boot" for night time watch. tt0082096 still a gripping movie, far more captivating that any crap they release now-days.
Other classics IMHO
Aguirre tt0068182
the madman kinski is unforgetable on it.
Kozijat rog tt0068814
the original women empowerment movie, makes all the shit disney and netflix vomit nowdays look like garbage.
Stalker tt0079944
Soviet Sci-Fi
Possesion tt0082933
Cold War era horror film. a bit artsy, but Isabelle Adjanis performance will haunt you. shes a looker too.
and if you are going to consider a movie like fight club an oldie, then maybe you missed:
The Boondock Saints tt0144117
Amadeus tt0086879
The City of Lost Children and Delicatessen tt0112682 tt0101700
Dark City tt0118929
Moon tt1182345
Confessions of a Dangerous Mind tt0270288
Unforgiven tt0105695
hell, i could go on forever...