A Total Failure as an Origins Flick
With all the bad superhero movies of recent years, it's good to know they could still totally screw things up back in the good ole days. Despite a cast that will always remain the most quintessentially Supermanish to me -- no one has played Kent better than Reeves -- this flick sucks. I thought Supergirl was bad when I rewatched it as an adult. Now I see it's a step up.
The script struggles. Between trying to establish the camp of the Superman serial, explain his origins, and introduce the various roles CK's associates will play, Superman 1 fails to have anything like plot or character. Instead, we get a lame interior monologue from Lois Lane when CK takes her for a romantic fly around Metropolis.
Skip Superman I and go directly to II -- you already know who everyone is anyway. And if you want some Origins, that's why the comic gods made Smallville.