For me, the most memorable part of the film Deliverance was the scene in which Ronny Cox on guitar, squares off against the inbred kid playing the banjo. Incidently, the composition made famous by Eric Weissberg and Steve Mandell for the film, was used without permission from the original composer Arthur Smith, who managed to sue the filmmakers successfully.
Steve Martin and the Steep Canyon Rangers
Steve Martin is an actor who is more famous for his comedic roles in films, but is quite an accomplished banjo player too. Here he is accompanied by the Steep Canyon Rangers on the Late Show with David Letterman.