Revealing mistake: There are numerous times throughout the series where the supposed big city of Metropolis is actually just a back lot set and none of the buildings are more than a couple of storeys high. Quite often the green hills of Southern California can be seen beyond the set and between the buildings.
Lois & Clark: The New Adventures of Superman (1993)
1 mistake in show generally
Starring: Teri Hatcher, Dean Cain, Lane Smith, K Callan
Superman: But, when I save a life, in that instant, I know two things that most people will never figure out: Why I'm here, and how I can make a difference.
Trivia: Had the show carried on for a fifth season, it would have been revealed that the baby that was given to Lois and Clark was actually Kryptonian royalty and was given to them to protect the baby from assassins.
Honeymoon in Metropolis - S1-E11
Question: Why did Clark destroy the video tape?