This ingenious site and $.99 iPhone app lets users know the best times to heed nature’s call during long movies. So how much time is there to run pee during, say, Transformers: Revenge of the Fallen? The service suggest four breaks, like 30 minutes in ”when the hangar scene is over.” The suggestions are solid — we just wish we’d get more time than the allotted 3-4 minutes per potty run. B

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