Make up your mind soon but if you want a guide to the overall opinion so far, check out the reviews below.
THR:
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Everything fun and terrific about “Iron Man,” a mere two years ago, has vanished with its sequel. In its place, “Iron Man 2″ has substituted noise, confusion, multiple villains, irrelevant stunts and misguided story lines.
Variety:
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…the beats here are more familiar, the pacing more uneven…In a sense, the virtues and weaknesses of the latest movie are reversed from those of the original…Here, the movie bounces through various travails assailing its hero, Downey’s Tony Stark, in less compelling fashion. Fortunately, that gives way to a final 35 minutes or so that delivers the goods…Where the first film felt buoyant and occasionally inspired in helpfully demonstrating that, done right, there’s considerable treasure to be culled even from second-tier occupants of the Marvel universe, the new pic feels more duty-bound and industrial.
HitFix:
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Both Captain America and Thor are overtly referenced in this film, and my guess is that we’re going to see these references work directly into the films that Marvel has in the works for next summer. It’s a fascinating gamble, and I talked to people after the film who were just annoyed by the whole thing, but I think it’s like watching part of a big, crazy mini-series. I don’t feel cheated at all by these clues. “Iron Man 2″ works as a complete film without any of these “Avengers”-oriented moments, but they add to the overall texture of the piece in some really rewarding ways.