12 Best Justice League Episodes
11. For The Man Who Has Everything
A story taken directly from legendary comic book writer Alan Moore's DC bibliography, For The Man Who Has Everything has Batman and Wonder Woman visit Superman at his fortress for his birthday, only to find him comatose and immobile, with a black alien flower attached to his chest.
Given to him by the villain Mongul, the Black Mercy traps Superman in a dream world where all his deepest fantasies come true, and feeds off his insensate form. In this case, Superman finds himself on a Krypton that was never destroyed, having an ideal life with a wife and son. While Batman and Wonder Woman clash with Mongul, Superman has to find his way back to the real world.
It's a tragic story, heart-wrenching when Superman is forced to say goodbye to his son in order to help his friends. Despite knowing it wasn't real, the vision was so strong that losing it felt like losing a real family, and Superman's anger and grief is felt when he's finally able to take Mongul down. It's also fantastically written, with a sense of unease and wrongness ramping up slowly but surely throughout as Superman's "perfect world" unravels.