Mention Eugene O'Neill's 1946 drama, The Iceman Cometh, to a younger generation and most people will have no idea what an iceman did. Cavemen, however, they know about.
In the past 100 years, Hollywood has delivered plenty of movies that feature prehistoric cavemen. From the earliest days of silent film, cavemen have found their way to the silver screen. Here's Charlie Chaplin in 1914's His Prehistoric Past (the last film Chaplin made for Keystone Studios).