May 6, 2010 10:22 AM

'Iron Man 2': Original was better, but the sequel is still a thrill ride | 2 ½ stars

The biggest joy of “Iron Man 2” is not the state-of-the-art f/x or the direction or the writing. It’s watching one of our best actors — Robert Downey Jr. — chow down on a role that lets him push ego-driven insouciance into the stratosphere.

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