You guys say you like that Ledger took the "darkest parts" of the Joker and cite The Killing Joke for an example.
...the Killing Joke being a comic in which Joker kidnaps Commissioner Gordon to take him to a circus, complete with freakshow assistants, and puts him on the rides (while singing to him), culminating in a fight with Batman in the funhouse's hall of mirrors.
Ledger had the dark aspects down, no question. He had way too little of the "joke" in "Joker." The bit early on with the pencil trick? That seemed Jokerish to me. The rest? Just some mad bomber. Could've been anyone.
The Joker's a crazy mass-murderer, sure, but he's not the kind of guy to let that take the humor out of a situation!
edit: That Troy Baker reading's mighty fine. He's clearly trying to go with Hamill's kind of delivery, but hey, that's no bad thing in my book, and he does it really well. Full marks.
A lot of the Joker's jokes in TDK after the pencil trick (which was my second favorite scene in the film) are much more subtle, like the red "S" he painted on the side of the 18 wheeler so that the text read "You can't spell slaughter without laughter" or something like that. And there's also the trick with switching the doctors and henchmen during the climax, so that the SWAT teams would have killed all the hostages instead. To me, that just screams
Joker. Oh, and I almost forgot the bank heist in the very beginning, where he forces people to hold on to live grenades instead of tying them up. That also struck me as a very Joker thing to do. Also that trick where he gags the bank manager with the grenade tied to the string of his shirt which pulls the pin as he drives away, revealing it to be a harmless smoke grenade. Then there's the "I'm only burning my half" scene.
And now I think about it, his whole plot with Harvey Dent is very reminiscent of what he did to Gordon in The Killing Joke, only not as over-the-top, and he actually succeeded in TDK.
So yeah, it is absolutely true that Ledger plays a much more subtle Joker and I totally get why that turns people off, but to say that he didn't have any Jokerish moments? Not true at all.