Who is your favorite comic book villain?
My personal favorite has always been Poison Ivy from the Batman comics. I've always been drawn to the fact that she's a beautiful, strong, feminine character who can kick some ass. I love that she uses sex and her sexual appeal to control men and women alike. Her creator, Robert Kanigher, has stated before that she was modeled after Bettie Page.
I also enjoy the fact that in some story arcs, she really stands for a cause and most of her "evil-doing" is related to her love for and the protection of all plant-life. She's just the villainess I love to hate.