Batman's many nemeses are each cunning in their own way - it's necessary to be able to get away with their crimes. The Riddler, however, is a different kind of trickster. He gives Batman, Robin, and his other victims a chance to thwart his plans or get out of trouble by offering them a riddle to be solved. Some of the classic Riddler quotes are simple puzzles that are easy to solve, but the best Riddler riddles stump even the smartest of brainiacs.
Be sure to read between the lines, and vote up your favorite Riddler riddles.