“I’m here, Perry....”
I remember the “Great Caesar’s Ghost” episode from when I was a kid, and I’ve seen it as an adult, too, although that was in the nineties, I think. Of course, Perry is haunted by the apparition he invokes, and at one point tries to escape from an airplane in flight, until Superman intervenes.
As I understand it, the show was an explanation for dropping the phrase from Perry White’s vocabulary, which they were doing because it was an oath, even if bowdlerized.