Wanna see more ironman movie? Mark I, Mark II, Mark III...

Also in terms of the realism, there's the development of the different armors in the movie. The original armor in the comics seemed like something that would be impossible for one man to build, but you did something more jury-rigged and realistic.

Favreau: We really wanted to play into that learning curve to make it plausible. I had a big sign that said, "Plausibility," and hung that sign above my door, so that everybody who came in for a meeting would have to read that and remember that that was the tone of our film. It did have to be believable, but it wasn't like all logic went out the window just because it was a superhero film, so when he builds the first suit, we tried to make it look like the Mark I Gray Armor, "Tales of Suspense" #39, but we also wanted it to look like it actually could have been built out of the parts of his weapons that he had available to him, so it looked like a real junkyard creation.

As he got into the Mark II we wanted that to feel more like an airplane prototype, like something out of "The Aviator," and slowly we built from the endoskeleton to the exoskeleton, all with the moving flaps. Hopefully we took baby steps and developments that you could finally believe that when Iron Man steps onto the screen, you've watched it being designed and birthed and believe that the technology has evolved over the course of the film to the point that you see at the end.