Penny Marshall
Garry Marshall, creator and then part-time writer for "Happy Days", cast Marshall and Cindy Williams to guest on an episode of the show. The installment, titled "A Date with Fonzie", aired on November 11, 1975 and introduced the characters Laverne DeFazio and Shirley Feeney (played by Marshall and Williams, respectively). In that episode, Laverne and Shirley were a pair of wisecracking brewery workers who were dates for Fonzie (Henry Winkler) and Richie (Ron Howard). The pair were such a hit with the studio audience that Garry Marshall decided to co-create and star them in a successful spinoff, "Laverne & Shirley" (1976–1983). The characters of Laverne and Shirley appeared in five more episodes of "Happy Days". In 1982 at the beginning of "Laverne & Shirley"s eighth season, Williams left the show due to her pregnancy. Marshall continued with the show, but it was canceled after the season's final episode aired in May 1983.
Happy Days
Happy Days is an American television sitcom that aired first-run from January 15, 1974, to September 24, 1984 on ABC, with a total of 255 half-hour episodes spanning eleven seasons. Created by Garry Marshall, the series presented one of the most successful series of the 1970s, an idealized vision of life in the mid-1950s to mid-1960s Midwestern United States, and starred Ron Howard as teenager Richie Cunningham, Henry Winkler as his friend Arthur "Fonzie"/"The Fonz" Fonzarelli, and Tom Bosley and Marion Ross as Richie's parents, Howard and Marion Cunningham. "Happy Days" became one of the biggest hits in television history and heavily influenced the television style of its time.