Despite struggling under the animated bulk, how might this Batman: TAS film's perception of the Caped Crusader put his other films to shame?

This is just your everyday romantic comedy with dazzling animation, right? I thought so, too, but it turns out it's the tip of the iceberg.

Groundhog Day, the holiday, is a quaint tradition. Groundhog Day, the movie, synonymized it with time loops. How did it strike such a chord?