The animated version of Frank Miller's "The Dark Knight Returns" is one of the best that Warner Brothers Animation has produced. It's writing is exceedingly loyal to the source material and yet doesn't get TOO bloody. Where Miller's style was new and rough, the animation here remains similar to his work and yet sharpens it. Here it feels more solid.
I love Robin's parents. Though you never see them, their hippie attitude amuses me.
I love how Gordon KNOWS that he's Batman. Hell, he IS a cop and supposed to be a detective so he should find out sooner or later. Since he realized that Gotham needed Batman, he kept the secret.
The voice talent is brilliant as usual with Peter Weller at the helm. He has a grizzled darkness that seems to come through naturally. That's where some actors get Batman wrong: Some, while trying to sound "dark", can actually sound more like they're growling.
Now some can be angry with the fact that they split it into two films but I have to agree with WB Animation in this regard. To do a good job with this film and have it condensed down into one, they would have to leave out a lot.
Hands down, one of the best Batman stories ever.