Question: Who played the title animated character Frosty  
Sentence (from "Frosty the Snowman (film)"): The program, which first aired on December 7, 1969 on CBS (where it still airs to this day), was produced for television by Rankin/Bass Productions and featured the voices of comedians Jimmy Durante as the film's narrator (Durante's final performance in a film) and Jackie Vernon as the title character.
Relevant evidence: Yes