No. 5 - “The Sting” (Season 4, Episode 12)
Will they/won’t they romantic relationships on shows can take a turn for unbelievable after a while, especially if one of the characters is as loving and selfless as Fry. So it’s hard to believe that after this episode, Leela still doesn’t fall for him for roughly another season and a half. Regardless, that doesn’t make the ending to this one any less moving. After a mission to retrieve honey from a giant space bee hive, the crew flies home with a baby queen bee in tow. The bee goes berserk, however, and attempts to sting Leela with its giant stinger, but Fry jumps in the way and is impaled instead, killing him instantly. The rest of the episode follows Leela slowly slipping into dementia from her guilt. She begins to see Fry in her dreams constantly, and becomes convinced he is still alive. Every time, though, he pleads with her to “wake up.” In the end, we learn that he was never killed, and his pleas were simply what Leela heard him saying as he sat beside her hospital bed. Leela was the one who was stung after all. Even though Fry did jump in front of her, she still received the poison from the stinger and was in a coma for two weeks. Fry never left her side, determined that if she heard a familiar voice, she would wake up safe and sound.