Jim Carrey is an actor who has starred in many films, including two roles based on characters from Dr. Seuss' books. The first role is the Grinch, a green, grouchy creature who attempts to ruin Christmas in the 2000 film adaptation of 'How the Grinch Stole Christmas'. The second role is the Riddler, a criminal mastermind and one of Batman's most iconic villains in the 1995 film 'Batman Forever'.