Batman: The Dark Knight Returns, Part 2 is easily on par with Chris Nolan’s amazing live action movies with great action, some good drama with the aging Bruce Wayne and an epic fight sequence between Batman and Superman, including some nice little zingers they throw back and forth.
Justice League: Doom has some of the same flaws of other DCU Animated releases, one being a short running time, that it limits any kind of character development or arc. Even so, the action and adventure elements are both fantastic and compared with the other Justice League movies, this is probably the best.
“Justice League” remains one of the best animated series ever made with some great action scenes intermixed with compelling stories and character development rarely seen in the genre. This season is probably the best but the remaining two, under the title “Justice League Unlimited” are still fantastic viewing.