Oh Alan Moore. I understand why you left the corporate world of comics. I really do, but man, I wish you would come back and just do awesome stories like this. Here is a story where Batman, Robin and Wonder Woman visit Superman at his Fortress for his birthday only to find that Mongul has trapped him in a dream with the parasitic Black Mercy plant. The plant is consuming Superman while creating a world where he never left Krypton, it never exploded, and he is living his life. Honestly, one of the most heartbreaking issues you can read involving a man who is nigh indestructible, but you are reminded that all men, regardless of strength, are still only men.