Best On-Screen Movie Transformations (PHOTOS)
Most recently, Sacha Baron Cohen channeled his newest creation, Admiral General Aladeen, to star in his new comedy The Dictator. He barely got out of character, even arriving to premieres and red carpet events as the hilarious ruler. He isn't the only celeb to be barely recognizable on set. Let's not forget Elizabeth Banks' stint as Effie Trinket in The Hunger Games or Brad Pitt's incredible transformation in The Curious Case of Benjamin Button.
Thanks to a combination of astonishing make-up and groundbreaking visual effects, see some of the best on-screen celebrity transformations in the gallery above.