The Batman Adventures/YMMV

• Adaptation Displacement: Being that its a Recursive Adaptation, and that comics aren't as popular as they used to be, whatever adaptations put into the cartoon are thought of as original stories by many.
• Foe Yay: The Riddler's attempts to get Batman's attention include making dinner for him (lobsters, no less). While wearing a "Kiss the Genius" apron.
• Ho Yay: In "Mad Love", after Harley's been thrown out a window by The Joker, Renee Montoya cradles Harley in her arms, with a worried look on her face. While there's nothing romantic about it at the time, considering that Renee later came out as a lesbian and Harley later became close with Poison Ivy (in a relationship sometimes hinted at, but never explicitly stated to be sexual) puts a whole new light on it years later.
• Too Good to Last: Batman Adventures was well-written and popular and cancelled anyway for reasons of overarching commercial strategy.