Seemingly the basis for the 2005 Batman Begins movie.
I just re-watched this episode and found it almost identical to Batman Begins. Civilians are gased by the fear gas and see Batman as a huge bat, just like the movie and then the final battle is almost carbon copied into the Batman Begins movie. Hopefully the next Batman movie will be an original and not use stories already told before. Even though the animated series was incredible I would like to see the screen writers get creative and not take the easy way out of writing a story. All in all this was a great episode.