Iron Man surpasses all expectations. Jon Favreau and Robert Downey Jr have done it--the superhero genre movie has finally matured. Gone are the foolish bat-films of the 1990s. Surpassed are all Marvel's previous films, whether we're talking Spider-Man or X-Men Franchises or any of the one-offs: Hulk, Daredevil, Elektra, Punisher, Ghost Rider, Fantastic Four, Silver Surfer... All have been surpassed by an order of magnitude with today's release of Iron Man. Even the previous titleholder Batman Begins has been eclipsed now that Iron Man has raised the bar.
Jon Favreau proves that he isn't just a comic geek or an actor/director. Favreau shows us that he cares about the source material. Where others who have taken up a comic book property and adapted them to the big screen have not shown that they fully understand or respect the stories or personalities of the characters, Favreau's adaptation of Iron Man shows that despite the excuses we've been given from producers for years, you can take a set of characters, their personalities and interrelations, their powers, surroundings, and circumstances and make a great movie that is also a great comic book movie, uninsulting to those that have loved the characters in their original medium for decades.
Iron Man is the greatest superhero movie of all time.