It was back in March that the Sad Panda first came into our lives. Our eyes first fell upon him during a casual perusal of Gothamist, and we were hooked. Who is this mysterious creature, with his furry suit, and deep dark eyes, and air of ennui, that seems to be haunting Lower Manhattan? we asked ourselves, and you. We asked you to send in sightings of him, and you did. Now, we've compiled several of them into a slideshow chronicling our obsession — and ultimate disillusionment — with the world's saddest bear. Be forewarned: This story does not end happily.