I always particularly liked the Riddler. Not the Jim Carrey version, but the Animated Series Riddler, and Adam West Riddler were pretty damn solid IMO.
My favorite? Easy... The mild-mannered Egyptologist who accidentally gets hit on the head and becomes the evil... KING TUT!
Never was a big Batman fan... But when Bane broke Waynes back. That was unforgettable. Not the stongest villain character wise, but def a memorable storyline.
Best thing about Eartha Kitt was the Santa Baby song. Julie Newmar FTW. Just kidding, I don't think I ever saw EK play Cat Woman so I have no opinion
The Houston Chronicle once likened my performance of Mecutio to Frank Gorshin's riddler. I was flattered! Especially since that was what I was using as an inspiration!
The '60s TV show: Frank Gorshin's The Riddler The '90s Animated Series: Mark Hamill's The Joker The Film Series: Liam Neeson's Ra's Al Ghul