This season, Discovery airs a behind-the-scenes episode that explains how the series is filmed, and another piece in which Grylls takes two of the show's fans on an adventure. There's no celebrity trek like last year's with Will Ferrell in Sweden.
"Zac Efron e-mailed the other day asking to do it," Grylls said.
I loved the Will Ferrell episode, so I'd welcome this.... but idek if Zac could keep up with Bear.
Also via BreakingFree.se :)