Nowadays, nobody would argue that Robert Downey Jr. is not the right guy to portray Tony Stark. However, many have forget that, because of his everlasting drug problem, Downey Jr. was blacklisted for many years and it was really a gamble. Fortunately, this gamble worked and this flick was a critical and financial success. It was the living proof that a comic-book adaptation doesn't need to be gloomy (like 'The Dark Knight') to be good. Indeed, it is easily one of the most fun super-hero flick I have ever seen (In my opinion, 'The Avengers' was even more fun). So, obviously, Robert Downey Jr. completely stole the show with a pitch perfect performance but the rest of the cast was also pretty good (Terrence Howard, Jeff Bridges, Gwyneth Paltrow, Paul Bettany,Jon Favreau). And, of course, the special effects were quite awesome but with such a huge budget, that was rather expected. But there was a good pace and, even though there were plenty of special effects shots, they still managed to develop enough the characters and, as a result, the story was quite compelling to watch. My only critic would be that the whole thing was still too predictable and, consequently, I was not really blown away. Still, it remains one of the best super-hero movies out there and it is definitely worth a look, especially if you like the genre.