@Darth Prime
In my opinion, two of the best Batman series was the The Batman Arkham trilogy of games, Batman the Animated Series, and yes even the Justice League Animated Series. Also, even if it may have had its issues, the movies by Tim Burton personally.
The Joker has been especially frustrating, as apart from Mark Hamill, everyone else forgets that the Joker is supposed to be the
Clown Prince of Crime, with a comedy themed if also deadly arsenal of gadgets. That the best part of the Joker is his dynamic and relationship with Batman, their chemistry together as opposing forces.
Hell, despite being the most kid friendly and silly, the
Lego Batman movie gets this right better then pretty much any of the live action movies. That is what is so frustrating. Even more with the new Joker movie, completely divorced from Batman mythos. Even
Batman the Brave and the Bold has a better understanding the DC comics, embracing the more fantastical and even silly aspects of the DC universe. Of why serious and more “realistic” is not always better.