Well, I'm spoilt for choice for the seventies!
So many good movies. I own a few more films from this decade - 41 to be exact.
So many great films came out in this decade ...
The Godfather (1972)
The Exorcist (1973)
The Godfather Part 2 (1974)
Jaws (1975)
One Flew Over The Cuckoo's Nest (1975)
Rocky (1976)
Taxi Driver (1976)
A New Hope (1977)
Halloween (1978)
Alien (1979)
Jaws was the first summer blockbuster, and A New Hope pushed the boundaries of special FX, most of which still hold up today, 44 years later.
One Flew Over The Cuckoo's Nest is so good I saw it twice as a 12-year old, knowing that I'd wake up tired for school the next morning, lol. I didn't care.
One of my favorite films ever is Rocky - the film's a masterpiece, IMO. It's so gritty, with the main character so relatable and likeable. The supporting cast is also very good.
It comes across as real people living real lives.