Most movies based on comicbook heroes that are relatively "unknown" are generally bad. This one was great from beginning to end, and kept true to the character. Robert Downey Jr. played a masterful job as Tony Stark. The special effects were great, but it did not show everything that could be done by Iron Man leaving the door open for more amazing things from future storylines. The subtle humor was great. Great job by Favreau in directing this film. This is a defintie must see.