50 Longest Running Primetime TV Shows (24/7 Wall St)

"In its short history, television has come to dominate the American lifestyle and cultural landscape. Approximately 99% of households own at least one television set, and the average American watches more than four hours of TV every day. There are a handful of television programs that have spanned multiple generations, and have had an outsized influence on the American public. To determine the longest running TV shows of all time, 24/7 Wall St. developed a list of primetime television shows using the Internet Movie Database and other sources. To be considered for this list, a show must have aired in the primetime slot at one point during its original broadcast run." - 247wallst.com