When people think of the most famous movie transformations of all-time, a few immediately pop into mind -- Theron in 'Monster' and Christian Bale in 'The Machinist,' perhaps -- and Eric Stoltz role in the 1985 film 'Mask' would definitely make the cut. Starring alongside Cher, Sam Elliott and Estelle Getty, Stoltz played the role of Roy L. “Rocky” Dennis, a teen with a major skull deformity.

In order to create the "mask," makeup designer Michael Westmore merged together three pieces of foam latex, which was then applied with a blend of makeup and a set of fake dentures for an added effect. All the hard work paid off when the film won an Oscar for Best Makeup Design.

The above left photo is of Stoltz in the 1982 film 'Fast Times at Ridgemont High,' just a few years before he debuted his 'Mask' performance on the big screen.

When it comes to amazing movie transformations, there are way too many to count. Let us know if we missed any of your favorites in the comments.

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