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Gyllenhaal Is a 'Man vs. Wild'

Look out, Bear Grylls: In this promo, Jake Gyllenhaal gives a preview of his time in the wild with the Discovery Channel host.

06.29.11 7:27 PM ET

Look out, Bear Grylls: In this promo, Jake Gyllenhaal gives a preview of his time in the wild with the Discovery Channel host.