Joaquin Phoenix

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Perhaps one of the scariest villains in cinematic history since Darth Vader was Joaquin Phoenix’s portrayal of Commodus in “Gladiator.” He is well-known for many evocative and challenging movie roles. However, he surprised many fans on his February 11, 2009 appearance on the “Late Show with David Letterman” by appearing barely coherent and only marginally responsive. After the show, Letterman quipped, “We hope to have Joaquin Phoenix present during his next appearance.” Phoenix later explained that his behavior was part of a mockumentary project he was filming. Viewers were unimpressed, upset that Phoenix would make a point at the expense of the purported stupidity of the American public.