I've been a fan of the Batman for 25 years, and got to experience first-hand the evolution of the character from campy cultural powderpuff to Dark Knight. As great as the change has been, sometimes it's necessary to stop trying to out-Frank-Miller the character. (Just look at what they did to the Spirit. Awful.)
The new "B:B&B" is a clever, fun, and completely refreshing take on Dark Knight and the DC Universe, using Silver Age-style artwork and contemporary snappy patter. Special kudos go to whomever is in charge of the music: rousing, brassy big band numbers that add to the show's flair. The new takes on classic characters like Green Arrow and Aquaman (the best take on Aquaman in television history!) is a double scoop of goodness.
Batman is, first and foremost, a comic character, and comics are, first and foremost, supposed to be fun. This series is *FUN*, a real blast to watch. If you can't handle the change, there's a half-dozen other anti-hero animated Batmans to sate your appetite. But you'll be missing out on a whole other dimension of the character. Highly, highly recommended!