#19: Happy Days Reaches Peak Popularity in the Late 1970s as Fonzie Dominates the Series
By the late 1970s, Happy Days had become one of the most popular shows on American television. The character of Fonzie was now central to the series, appearing in many of the biggest storylines and becoming a cultural symbol recognized across the country.

The leather jacket, motorcycle, and cool confidence associated with Fonzie became widely imitated. Merchandise, catchphrases, and media attention surrounded the character. For the actor behind him, this period represented the highest point of early fame, as millions of viewers tuned in each week.
