Tony Stark Is Back, and So is the Art of the Summer Blockbuster.

I am an ardent supporter of independent cinema. Few things in life are as rewarding as discovering a little-known cinematic gem, then watching as that film makes its way around the country through word of mouth. However, there are some big-budget, smash-hit movies that absolutely demand to be seen. "Iron Man 2" is one of those films. Like its wonderful predecessor, "Iron Man 2" is equal parts brains and brawn, a wildly entertaining blockbuster that also happens to be full of wit and heart.

The sequel takes place as Tony Stark, a.k.a Iron Man, continues to profit off of his superhuman powers and worldwide fame. He has opened a gargantuan convention center entitled Stark Expo in New York, and he is reveling in the fact that his heroic efforts have helped to maintain world peace. Still, Stark's outward appearance of fame and fortune serve to disguise his inner turmoil. He is being investigated by the Senate, and his Iron Man suit has raised his blood toxicity level to dangerously high levels. Making matters worse, a Russian convict named Ivan Vanko possesses the technology to challenge Stark and damage his legacy. Alas, all is not well in the life of Iron Man, and this film examines Tony Stark's struggle to maintain his health all the while carrying the lofty expectations of an awestruck public.

The fact that "Iron Man 2" even dares to explore these issues of internal crisis shows that this film has far more intelligence than your typical summer blockbuster. Yes, there are a great amount of action sequences, all of which are perfectly executed and exhilarating. But this film, with an astute script by Justin Theoreoux and skilled direction by Jon Favreau, balances scenes of thrilling action with scenes of quiet nuance. This is due in large part to the fantastic cast. Robert Downey, Jr. is superb in the title role, brilliantly managing to show both Tony Stark's immense egocentrism and his burgeoning humility. Gwyneth Paltrow is wonderful as Stark's loyal but concerned boss and romantic interest Pepper Potts. Sam Rockwell----one of the world's most under-appreciated actors----is hilarious as a sleazy defense contractor. Scarlett Johannson gives a sexy, charming performance as an undercover agent who catches the eye of ladies man Tony Stark. And it is a blast to watch the great Mickey Rourke as the buff, tough Russian villain. I haven't even mentioned the fine work turned in by Don Cheadle, Samuel L. Jackson, Jon Favreau, and Garry Shandling in a very funny cameo as an irritated Senator.

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"Iron Man 2" is not quite as consistently satisfying as the original----the film briefly meanders in its middle act----but it is still sharp, funny, rollicking fun. This is what summer blockbusters should be: rife with breathless action, while at the same time maintaining a welcome sense of realism and humanity.