Eh. I think all of DC's animated films aren't worth it, except for maybe Justice League Doom and Crisis on Two Earths.
..............................Nnnnnnnnnnnnnno. They got nothing on
Under the Red Hood. You sound like you haven't watched it. Seriously, GO WATCH IT.
I'm not saying it's going to be life changing. I'm just saying that among a subgenre that produces mostly mediocre works with a few enjoyable and few exceptional works, this one stands head and shoulders WELL above all the rest, and it's not even glorifying it. It's a pretty obscure title among all the DC animated films. It's a separate continuity, so it's not linked to this work or that work, or the animated series, or the Arkhamverse, or the Nolan films, or whatever. It's superbly written by one of the guys who originally AUTHORED the stories the film was based on (which he also used as an opportunity to correct a past mistake), and it USES the PG-13 rating, rather than just tacking it on so it can say a few cusses now and then, because it has to tell a mature story without hiding behind bullshit censors. It has excellent character arcs and archetypical representations of the big philosophical themes of the series (the ones that are worth touching on and exploring).
Last but certainly not least, the BEST non-Hamil Joker voice over since Hamil quit being the Joker. I sincerely had my doubts about liking John DiMaggio as the Joker, but he did a FANTASTIC job. In fact, the whole cast (all originals, none from the animates series) was really great. Would I have preferred Kevin Conroy? Oh sure. But the point is that the cast did a great job, and if you've going to have a film with the Joker in it, even if he's not the main antagonist (but the Joker ALWAYS makes himself a focal point of any story he's involved in, so...) you gotta do him right. And
Under the Red Hood did the Joker GREAT. And Batman. And Red Hood / Red Robin. And Nightwing. And Black Mask.
Great film. You don't have to like other DC animated features to see this film. You don't need to come into seeing it expecting it to redeem all the others. Only come into it, watching it for its own sake. Cause it's a fucking fantastic movie.