Movie Trivia - March 13th - Superman

During the scene in which Superman and Lois go flying together and then Superman flies away, there is no cut between Superman flying away and Clark showing up at Lois's door.

This was done using a prerecorded movie of Superman flying away on a screen with Lois standing in front of it. Then, as she walks away from the balcony, so crosses from the screen to the set with her apartment where she opens the door to reveal the real-time Clark Kent.

Aaahh, movie magic. I love it.