The Joker and The Masters of Evil

I have always liked how The Joker can always seem to hold his own when placed alongside much more powerful super-villains.  He may not have any special abilities, but his insanity gives him an unpredictability that can give him the edge over more methodical characters.  It's always fun to see him alongside other villains because you are just waiting to see who is going to double-cross who first!