The 11 Scariest Lady Villains: 'Game of Thrones,' 'Sopranos,' more
Are these the witchiest women in television history?
5. The Lady Cylons ("Battlestar Galactica")
Best Worst Moment: The whole trying-to-wipe-out-humanity thing.
Why they were so bad it was good: The male cylons looked like bookish CPAs or Dean Stockwell, with Leoben being the ruggedly handsome exception. However, their lady counterparts were all stunning femme fatales who could be -- depending on the model, life experience and location -- purely evil, sorta evil, sympathetic, or indisputably heroic. Most notable are the seductive Caprica 6 (Tricia Helfer) who acts as Gaius' Lady Macbeth, and the reformed 8 (Grace Park) who becomes one of humanity's greatest assets in the ongoing war against the cylons.