I don't think Crowley makes a great villain so much as he makes a good Frenemy. He's a great character, and Mark Shepard did a fantastic job. It'd be really hard for me to rank the Supernatural characters. Castiel and Dean at the top obviously. After that it's hard. You've got Crowley, Lucifer, Death, Sam, Bobby... oddly there's no female characters probably in my Top 10 (though Jo, Ellen, Rowena and Jodi may come close and maybe The Darkness). Supernatural has some good female characters, but no really great ones. They have a shot with Mary, but she's been almost as bad of a mother as John was as a father. ---
This isn't funny Dean, the voice says I'm almost out of minutes! ~Alexandra