Weren't all Zod's previous post-Crisis appearances all variations from alternate universes, since Supes had to be the sole-Kryptonian? If so, Johns'/Donner's Zod was the first definitive post-Crisis, Kryptonian Zod.
Didn't John Byrne credit Reeve as a basis for his Supes? Maybe not as spot on as Frank's, but the resemblance is there. And yes, I believe Keaton's Batman is as close as we've seen to Bob Kane and Bill Finger's original vision on the big screen.
I do agree Supes was around long before Reeve and will be around decades after I'm gone. It just bugs me to see how easily dismissed a classic film is after a newer, shinier version is released. Like it or not, the 78 film was the first big-budget serious treatment given to a comic book character. People remember SUPERMAN III and the sillier bits of II, and like to lump it in with the Adam West series. But in fact, Donner treats the material with respect. We see young Clark's anguish and struggle trying to fit in. Pa Kent's instillment in Clark to be a good person. Superman's growing into his role when he has serious choices to make. All the high points people credit to MAN OF STEEL are already fully developed in the 1978 film. Even director Richard Lester, upon deciding to go in a campier direction, brushed aside what he called Donner's "David Lean approach."
It's obvious I love those films. But even if I pretended it doesn't exist, and look at MOS at it's own merit as a film, it still has its fair-share of flaws. Especially when compared to flicks like WINTER SOLDIER, THE DARK KNIGHT and THE AVENGERS.