Nice interview on Newsarama. http://www.newsarama.com/movies/Superman/SuperWriters.html Basically this is a sequel to Superman I & II. At the end of Superman II, Sups tells the President, "Sorry to disappoint you, I won't let you down again", because he was not there when Zod invaded Earth. So then he promptly goes off into space for a few years? This doesn't really make sense.
(edited by kentish on 16.5.06 0948) Baby, you've got a stew goin'!
Knowing that this was the big 100th Episode celebration two-parter, I figured it would make sense to comment when both episodes had aired. I have to say, I thought this was a somewhat disappointing farewell to the High School side of the show.