Star Wars (1977)
A monumental diversion from the strong trend of »contemporary realism« (for lack of a better term) in american moviemaking of the 70s. Behind ridiculous haircuts and stupid costumes stands a straightforwardly told science fiction adventure story with special effects still quite acceptable. Surprisingly enough it is the direction that feels a bit lame today, several defining scenes slip by without any real tension.
30 years ago I probably wouldn't have had any doubts whatsoever whether this one qualified itself for a place in my own book or not, but today I am not as sure.