So, in that spirit, I ask you, my fellow geeks, just who are the greatest and worst Villains in the SF/Fantasy pantheon? He/She/It can be from any sort of media, comic, film, cartoon, Game etc. Post your picks and tell me why?
My pick for the greatest:
Emperor Palpatine from the Star wars Saga.

Why? He actually did 'it'. He conquered the Galaxy, unlike his many rivals. In a few short years, he went from obscure Senator from some backwater planet to Chancellor to Emperor of a galaxy far, far away. Then he held it against all comers for a good twenty years. Not too shabby. If you include the post 'Jedi' books and comics he evn manages to make several come backs (as a clone no less).
For the Worst:
Le Chiffre from Casino Royale.

The least scary villain ever. Oh no! Not a merchant banker. If he catches me he might freeze my assets! My credit rating might slip! He might even cut up my credit cards! However will we stop his evil machinations? I know, let's play cards with him! It will be far less preposterous than just shooting him in the head.
