Why is the English spoken by Maine lobstermen so different from that spoken by cowboys in Texas? Does Spanish pose a threat to English as the dominant language in America? And what on earth do yins, wickety wack, ayuh, cattywhompus, and stomping it clean mean? Celebrated journalist and writer Robert MacNeil-in his first public television documentary since 1995-travels cross-country to answer these questions and examine the dynamic state of American English.