Crazy Ex-Girlfriend is a national treasure, and so is its star and co-creator, Rachel Bloom, who tears through the first episodes of season three like a show-tune-belting tornado. Perennially a top candidate for the title of “the best show you’re not watching” — though it goes without saying that if you’re reading this, you’re already a fan — Bloom and Aline Brosh McKenna’s series about a self-destructive lawyer is one of TV’s richest ongoing achievements. The sheer number of things it does well amounts to a show in itself. It’s a screwball comedy, a romance, a musical, a fantasy, a workplace satire, and an affectionate portrait of modern life in an unremarkable suburb (specifically West Covina, California). And it’s a lacerating psychological drama that understands and empathizes with all of its central characters, even the most destructive, while seeing through their hypocrisies and self-justifications. And it’s one of two current comedies — BoJack Horseman being the other — that apply all the right lessons of Mad Men’s approach to anti-hero-driven storytelling, diving into painful territory without extinguishing laughter.