You can really tell when the director loves the premise of the movie. Favreau is clearly a comic book fan. This treatment is well done and even Iron Man purests should enjoy it. The movie stayed pretty true to the comic and only took a little license in bringing it to the big screen. Robert Downey, Jr. is excellent as Tony Stark, but the pacing of the movie is a bit uneven in parts and Terrance Howard's performance is uninspired.