How dating and relationship shows have revolutionized the game show genre, helping Americans navigate changing social norms around love, sex and gender roles.

The evolution of reality competition shows sheds new light on changes to the TV industry, as well as broader social shifts in American culture.

A behind-the-scenes look at heart-wrenching moments of victory, defeat and even fraud puts a human face on the popular format.

The evolution of the quiz show provides a glimpse into the transformation of American culture, its shifting relationship with knowledge through the kinds of questions asked and the responses.