I think so, but Ledger's dark anarchist is the freshest on people's minds and one of the best performances in cinematic history. So I can understand why some folks might have trouble acclimating.
Max Landis, yea I know, brought up some interesting points about the Joker.
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‏@Uptomyknees
Playing the Joker is on its surface ridiculously easy:
1 - Is homicidal
2 - Laughs a lot
3 - dgaf
4 - makes jokes
Max Landis ‏@Uptomyknees Jun 29 Greater Vancouver, British Columbia
Those are his four characteristics. But building those out into a grounded performance is so hard Romero and Nicholson didn't even try.
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‏@Uptomyknees Max Landis Retweeted nlh
Joker became a real character (anarchist who thinks everyone is secretly Joker) in The Killing Joke.
Max LandisVerified account ‏@Uptomyknees Jun 29 Greater Vancouver, British Columbia
Leto will be interesting to watch; despite all appearances, he seems like the most "Comic Book" version of the Joker to appear in a film.
Then he basically said we'll see if that actually works or not. Since Leto's Joker is more comic book like from many years ago.