I am currently compiling top 100 lists for each decade from the 1930s onwards - sadly, as of yet, I have not seen enough pre-1930s films to go back any further than this. I won't post the entire 100s on here but here is my top 50 for the '70s. As always, the order would likely shuffle a bit were I to try again later.
Please feel free to comment or share your own favourites, or recommendations of films I may not have seen.
- Stalker (1979) Andrey Tarkovsky
- Murmur of the Heart (1971) Louis Malle
- Annie Hall (1977) Woody Allen
- The Last Picture Show (1971) Peter Bogdanovich
- Jaws (1975) Steven Spielberg
- Nashville (1975) Robert Altman
- Solaris (1972) Andrey Tarkovsky
- 3 Women (1977) Robert Altman
- Monty Python and the Holy Grail (1975) Terry Gilliam & Terry Jones
- Walkabout (1971) Nicolas Roeg
- Barry Lyndon (1975) Stanley Kubrick
- Ali Fear Eats the Soul (1974) Rainer Werner Fassbinder
- Death in Venice (1971) Luchino Visconti
- Aguirre, the Wrath of God (1972) Werner Herzog
- Cries & Whispers (1972) Ingmar Bergman
- That Obscure Object of Desire (1977) Luis Bunuel
- The Tin Drum (1979) Volker Schlondorff
- Breaking Away (1979) Peter Yates
- The Devils (1971) Ken Russell
- The Last Detail (1973) Hal Ashby
- Manhattan (1979) Woody Allen
- The Exorcist (1973) William Friedkin
- The Godfather (1972) Francis Ford Coppola
- Star Wars (1977) George Lucas
- The Man Who Would Be King (1975) John Huston
- Alien (1979) Ridley Scott
- The Godfather Part II (1974) Francis Ford Coppola
- McCabe and Mrs. Miller (1971) Warren Beatty
- Pocket Money (1976) Francois Truffaut
- Eraserhead (1977)
- Sunday Bloody Sunday (1971) John Schlesinger
- Days of Heaven (1978) Terrence Malick
- Day for Night (1973) Francois Truffaut
- All That Jazz (1979) Bob Fosse
- Cabaret (1972) Bob Fosse
- Chloe in the Afternoon (1972) Eric Rohmer
- Taxi Driver (1976) Martin Scorsese
- Overlord (1975) Stuart Cooper
- The Tree of Wooden Clogs (1978) Ermanno Olmi
- Julia (1977) Fred Zinnemann
- Sleeper (1973) Woody Allen
- Apocalypse Now (1979) Francis Ford Coppola
- The Railway Children (1970) Lionel Jeffries
- The Wild Child (1970) Francois Truffaut
- Dodes’ka-den (1970) Akira Kurosawa
- The Passenger (1975) Michelangelo Antonioni
- The Outlaw Josey Wales (1976) Clint Eastwood
- Saint Jack (1979) Peter Bogdanovich
- Bound for Glory (1976) Hal Ashby
- Slaughterhouse-Five (1972) George Roy Hill