I wonder what parallel world I moved to, where nothing before 1977 actually exists?

Your pre-1977 picks would be a most welcome supplement to the sarcasm.

Yeah dude, stop whining and start contributing.

Besides, we have already mentioned stuff like Morricone's "Dollars" trilogy (from the 1960s), and I mentioned "The Exorcist" (1973) and "Monty Python and the Holy Grail" (1975).