Sergio on the set.  Doing what every director, deep in their hearts, wants to do with the actors, the crew, the production staff, the post-production people, and especially the producers.  ;-)

More Useless Knowledge:  When Lew Wallace was writing Ben-Hur he was avoiding work as the Territorial Governor of New Mexico during the Lincoln County Wars.  (Think Billy the Kid)

Have you ever seen Napolean directed by Abel Gance?  One scene has the first shots taken from the back of a running horse.  Since this was before Steady Cam the visuals were 'interesting.'  ;-)