The Mary Tyler Moore Show mirror those of "The Mary Tyler Moore Show". When the writers of the sitcom "Friends" were about to create their series finale, they watched several other sitcom finales. Co-creator Marta Kauffman said that the last episode of "The Mary Tyler Moore Show" was the "gold standard" and that it influenced the finale of "Friends". The show spun off three television series, all of which aired on CBS: the sitcoms "Rhoda" (1974–78) and "Phyllis" (1975–77), and the one-hour drama "Lou Grant" (1977–82). In 2000, Moore and Harper reprised their roles in a two-hour ABC TV-movie, "Mary and Rhoda". Two retrospective specials
Teen sitcom format to "The Wonder Years", which ended before "Boy Meets World" debuted in 1993, both of which focused on a boy dealing with the challenges that come with growing into adolescence) and "Family Matters" (which originated as a family sitcom spun off from the family-friendly though adult-centered "Perfect Strangers", but soon shifted more of its focus towards its teenage characters due to the popularity of the character of nerdy high school (and later, college) student Steve Urkel). Over time, the Big Three television networks (ABC, CBS and NBC) began shifting away from family-oriented comedies toward comedy series focused on adults