TIME's Best Inventions of 2008

The Other 49 Best Inventions

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38. The Baseball Instant Replay

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Introduced for this season's stretch run, replay allows teams to contest controversial home-run calls for the first time. Using ballpark monitors, umps can review a play from every possible angle. This may add minutes to a game that already suffers from slowness, but that's a small price to pay for making the correct call.

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