Easton coached hundreds of notable character actors and stars, helping them to speak convincing dialects in their roles. A few of the actors he tutored in speech included Gregory Peck, who required an accurate German accent for his dialogue in the 1978 film "The Boys from Brazil"; the English actor Laurence Olivier, whom he helped to speak in the style of a native resident of Michigan for "The Betsy" (1978); Ben Kingsley, another Englishman, whom he assisted with his Indian accent for "Gandhi" (1982) and his dialogue as a New Yorker in "Bugsy" (1991); Al Pacino with his Cuban dialect in "Scarface" (1983); Arnold Schwarzenegger, in adapting his Austrian accent to Russian for "Red Heat" (1988); Irish actor Liam Neeson for his role as a Kentuckian in "Next of Kin" (1989); Robert Duvall in his portrayal of Virginia native and Confederate General Robert E. Lee in "Gods and Generals" (2003); and Forest Whitaker, whom he coached to speak with specific regional African intonations and inflections for Whitaker's Oscar-winning performance as Ugandan political leader Idi Amin in "The Last King of Scotland" (2006).