4. Nicolas Cage
Known For: If you need an actor to play crazy, nobody better fits the bill than Nicolas Cage, who has proven himself a go-to-nutter in variety of films, from Vampire's Kiss, to Face/Off, to Bringing Out the Dead.
The Parody: Around 2006, Cage basically seemed to stop giving a s*** about his work, and began starring in a series of increasingly bizarre films that allowed him to harness his inner-crazy but little else, essentially becoming an exaggerated version of the type of actor he was already known as. Roles such as The Wicker Man, Bad Lieutenant (the good one of the bunch), Season of the Witch (in which he sported crazy hair) and Drive Angry helped foster a resurgent cult of popularity around the actor, leading to the now famous montage videos of Cage freaking out on YouTube. Every so often, Cage will return with a great performance, but it's normally peppered between several utterly insane ones.