Trivia: This series is where Superman first "learned" how to fly. Before this series, in the comics and radio, he was only able to jump very high and far, hence "leap tall buildings in a single bound". They decided that it just didn't look right on film and they decided to have him fly, but it's still depicted as if he has to get a jumping start.
Trivia: The Fleischer brothers were at first reluctant to take on making this series. This is because that it would require a much more realistic design and style of animation than they usually do. Trying to discourage Paramount from giving it to them, they said they would need about $100,000 per episode, approximately four times the budget of most Disney films at the time. To their shock, Paramount agreed to give them half that, which has made the classic Superman series, accounting for inflation and adjustable dollars, the highest budget animated series in history.
