You know, even if Marvel making famous films, but in situation with cartoons, oooh, DC make them better)
Justice League Animated and Unlimited is one of them) I so like this cartoon) And, i can tell you,this is not a children's cartoon, because of many adult moments)
For example, in first season the Flash says:
-i'm the fastest man on Earth
and Hawkgirl answering him
-Oh, now i understand, why you dont have a girlfriend