Suppose I say the phrase "Raiders of the Lost Ark." What is the first image (not the first word or phrase) that pops into your mind? I'm guessing for many of you the first image is of a man in a fedora running frantically away from a giant boulder through a narrow cavern, in imminent danger of some nasty flattening. Thanks to Mad Dog Movies, we have available a recreation of the moment at which that scene came into the head of director Steven Spielberg, under prodding from producer George Lucas. Lucas, just coming off the success of the Star Wars opening, met Spielberg and screenwriter Lawrence Kasdan for some old-fashioned spit-balling. Some of the ideas discussed in that first meeting were immediately discarded, others were left open at the time but never made it into the movie, still others like the boulder became images permanently affixed in our heads. Here's the transcript . At the top of p. 4, Lucas says, "I thought it would be interest...