Review: 'Limitless' is sharp, but has its limits - CNN

Nor is Eddie, at first. He's stumbling through, working on the first page of a novel -- the first word, even -- drinking too much, and relying on bailouts from his soon-to-be-ex-girlfriend to keep the landlord from changing the locks. He looks about as bad as Bradley Cooper is ever going to look.

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Then he bumps into his ex-wife's brother Vernon (Jonny Whitworth) on the street. Vernon's not a dealer, he's a "pharmaceutical consultant." Against his better judgment Eddie pops the $800 pill Vernon says will help him with his book. Which it definitely does. But in short order Vernon winds up dead and Eddie's holding the stash.

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How to show enhanced IQ on screen? Director Neil Burger ("The Illusionist," "The Lucky Ones") and director of photography Jo Willems seize on clarity. When the pills kick in, it's as if Eddie's 20/20 vision has been restored. The world perceptibly brightens, colors are sharper, and everything snaps into focus.

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Review: 'Limitless' is sharp, but has its limits - CNN