In the world of bug-eating, bungee-jumping reality television, here's a twist: Christian missionaries living a travelogue life while viewers watch their aches, pains and trials trying to spread the Gospel. The show, Travel the Road, is now in its third season, reaching 250,000 to 300,000 US households per show on cable's Trinity Broadcasting Network, which bills itself as the world's largest Christian network. The show also airs on numerous other cable channels in about 100 other countries, according to executive producer Michael Scott. Scott's brother, Tim, 27, and 30-year-old William Decker are the two missionaries, doing their own filming to...