Final answer:
The 1950s quiz show scandal was a notorious event in television history, where quiz shows were found to be rigged, leading to public outcry and regulatory changes.
Step-by-step explanation:
The 1950s quiz show scandal is considered to be one of the more notorious episodes in the history of television. During this period, several popular quiz shows were found to be rigged, with certain contestants being provided with the answers in advance. The scandal led to a public outcry, congressional hearings, and significant changes in the regulation of game shows. It highlighted the potential for manipulation within the television industry and shook the public's trust in the media.