Screen tests offer an interesting look at actors before they fully "become" a character. As Alison Nastasi at Flavorwire puts it, "It’s a chance to see popular stars, who always appear so glamorously surefooted, build the framework for the movies that made them famous in a smaller, bare-bones setting." Indeed. Check out Ralph Macchio testing for Karate Kid, above, and click through for more classic hits like ET, Tootsie and Titanic. Link