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I actually like the slow-mo as it reaffirms the fact that there is no air in that chamber.

When the feathers first drop you see a slight sway in the feathers, but only due to the acceleration. It's actually quite a sight to see feathers accelerate so quickly and stay so still.

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According to this, http://en.wikipedia.org/wiki/Equivalence_principle, posted lower, the feathers aren't under acceleration. Which is pretty cool once you think about it.

I'm not against them using slow-mo at all.

But they showed the drop several times, and I would have preferred them to show it at real speed at least once.

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