Wow, that was 40 years ago. It was not the best, but it was a lot better than other flicks at the time. Before Star Wars, movies were mostly dialog, one character explaining the story to another.
What I remember most was riding home on my motorcycle, trying to zap cars that got in front of me!
When it first came out it was a giant move forward with special effects. I would say that made it an excellent movie back then.