When the stadium spectators realized the German guy was an imposter, they started to whistle loudly (which is booing in Germany). Frank entered the stadium to the boos. He thought to himself, "Geez, I know I'm an American, but give me a break here."
I also remember him saying in an interview that he saw Hill's shiny aluminum foil running shorts and shoes with paper thin soles, he said, "I've got a very light stride, but I wouldn't want to run a marathon in HIS shoes. And look at those shorts! He probably had his hair trimmed to the precise millimeter for reduced wind resistance."
Yes, Visions of Eight is the film. Snatch it up if you ever see it somewhere. It's a great film. There's got to be a copy of it somewhere. In 1977 I saw a film of the whole 1976 Montreal marathon (it was probably in Beta format), so that's out there somewhere as well--not a documentary, just the whole race with commentary as it went down.
Roone Arledge, who produced ABC's Wide World of Sports, decided to cover the whole marathon for the first time. Up until then, they just showed the runners leave the stadium, then re-enter two hours later. Americans watched Frank Shorter "invent" running, and the next day 10 million men in Bermuda shorts and tennis shoes took up running for the first time.
I was just beginning 6th grade (Olympics were in September that year), and Frank Shorter became the hero of my youth (and he's still my hero). He's a great, great man, and even after all these years, he's never disappointed us and has been a true friend to our sport. In my eyes, the most important American distance runner ever.