Batman: The Animated Series Easter Egg - Hello, Joel

This episode, concerning the BTAS's creators's inspirations for their version of Batman includes a special guest. After we see the "Frank Miller-50-year-old" version of Batman, the three kids run into a young man who's dressing a window maniquin. He says things like, "I lo-o-o-o-ve Batman. That rubber suit. I hear his car can drive up walls." The kids say, "sure Joel," proving that this slightly effeminate, costumer is supposed to be Joel Schumacher, director of Batman Forever and Batman & Robin, noted for their rubber suits.