Tonight marks another special episode of Discovery’s Man vs. Wild. Will “Fan vs. Wild,” in which host Bear Grylls brings two viewers along for the ride, top the Will Ferrell expedition? After watching the two preview clips below, the jury is still out. The one guy is deathly afraid of crossing water (that okay, leads into a waterfall), and the other refers to Grylls as “pure evil” after he insists they join him in a breakfast of worms, which, like sirloin steak, are around 60 percent protein. “I’m right in your projectile vomit line,” Grylls says, chuckling. Oh, maybe this does stand a chance.