"Airplane!" up against its inspiration, "Zero Hour"

(CBS) - Wait, you mean that classic 1980 suspense-thriller "Airplane!" was based on an earlier movie? Surely you can't be serious!

Not only is it hilarious how closely "Airplane!" copies the 1957 film "Zero Hour," but also that some of the lines in "Airplane!" that typically get a laugh are ripped wholesale from the original. As if you need another reason to re-watch that classic.

Take a look at the original screenplay for "Zero Hour" HERE to see just how closely the movies match up.