Fullmetal Alchemist: Brotherhood

Best anime ever. Even if you're not that much of an anime watcher, you must see this!

Aside from a couple of misguided filler episodes, this is the closest thing to what I could call a perfect show. Just an excellent, well-planned story that only gets better and more investing with every episode. The only consistently distracting thing I can think of is the slightly out-of-place cartoony humour at times, but in a series this dark some levity is appreciated. It's pretty noteworthy that this series exists at all, as this manga already had an adaptation that spiralled into a non-canon mess. Incredibly this one-ups Dragon Ball Kai by being a ground-up remake instead of a re-edit, and I think this formula needs to be implemented to save other anime that have been destroyed by greedy producers and horrible padding (cough cough NARUTO). But that's all I can say as far as recommending it, please just skip episodes 1 and 27 and otherwise go in totally blind. It'll be worth your while.