>> but one of the biggest tells for class was actually a southern accent. >> can i use your hose? >> get it yourself. water and air is free. we do make a charge for ice, though. >> that north/south divide became an inspiration for all of these rural sitcoms. ♪ >> the whistled theme to "the andy griffith show" coupled with that bucolic image of andy and opie makes you think of small-town americana in a simpler time. >> anybody ready for some lunch? >> oh, we sure are. >> oh, boy! >> "the andy griffith show." that was another whole camp. >> here you are. >> the comfort food aspect of sitcoms. >> you do like pickles, don't you? >> oh, sure. who don't? >> andy griffith was a small-town sheriff. didn't have a lot of money, and they were kind of like simple. >> going into the competition