"Cleaner ways don't win wars." -- Stannis Baratheon
Everyone say it together now: Crazy shadow-demon birth!
If the character of Melisandre hadn't drawn you in yet in "Game of Throne's" second season, I'm betting she had by the end of episode four, "Garden of Bones."
As the episode (a strong first effort by writer Vanessa Taylor) came to a close, Melisandre gives birth to King Stannis' shadow-demon son (who, if the show is consistent with the books, is the image of Stannis, himself).
This shadow-demon will have a major impact on the course of the second season, but I won't give any spoilers away.