I Love Lucy (1951)

I Love Lucy (1951) laid the concrete foundation for all TV sitcoms that followed, pioneering the three-camera setup filmed before a live studio audience and the use of 35mm film for syndication. At its peak, 60 million weekly viewers tuned in from a US population of 165 million — a 36% penetration rate that dwarfs modern hits like #2 Breaking Bad's 10.3 million finale audience (3% of today's population). The "Lucy Is Enceinte" episode outpaced President Eisenhower's inaugural address in viewership the following morning. By standardizing re-runs and production techniques still used today, the show's $40 million syndication revenue by 1955 (adjusted for inflation, over $450 million) established the economic model that sustains all subsequent multi-camera comedies. Its comedy remains the template for the genre.