In order to combat negative rumors about the production, a theatrical
trailer was hastily assembled to be distributed to theaters. To test its
effectiveness, Warner Bros. executives showed it at a theater in
Westwood, California to an unsuspecting audience. The ninety-second
trailer received a standing ovation. Later, it would become a popular
bootleg at comic book conventions, and theater owners would report
patrons paying full price for movie tickets just to have an opportunity
to see the trailer, and leaving before the feature began.