One of the films from the 1970s that made an impression on me was "O Lucky Man!", a 1973 film with Malcolm McDowell, Helen Mirren and Ralph Richardson. It's kind one of these "let's get stoned and make a movie" that came out around that era. I was impressed enough I once almost bought a 2 tape VHS version but DVD was out at the time so thought I would wait for it. Last night I watched the almost 3 hour epic on DVD that I rented from Netflix. Tonight I will run it through again with the commentary on to see what was behind the making of this film. The story is about a young coffee salesman and the evils of capitalism (you can see why this would be my cuppa tea). Holds up well though I always thought it sort of got weak towards the end:
http://www.imdb.com/title/tt0070464/