Transcript for A Look Back at the Iconic Mary Tyler Moore Moment
Finally tonight, it turned out she could turn the world on with her smile. Mary Tyler Moore and the famous twirl and what she once told Diane. ??? Reporter: It's been named one of the greatest moments in television history. The last shot in the opening sequence of "The Mary Tyler Moore show." You weren't worried the people would expect to see turning the world on with her smile? Well, you know, I don't mind turning the world on with her smile because at least the smile is the evidence of what's inside. ??? After all ??? Reporter: It turns out that knit cap was a gift from her real-life aunt, for the freezing Minneapolis weather. The scene parodied by the simpsons. Among so many others. Even Oprah. But no one could do it like her. Mary Tyler Moore once saying that one simple gesture said everything about her character's spontaneity and joy. What does Mary Tyler Moore know now that she didn't know when she was in her 20s? That it's okay. Whatever it is, it's okay because it's what it is. Don't be looking for perfection. Don't be short-tempered with yourself, and you will be a whole lot nicer to be around with everybody else. Still holds true today. Thank you for watching here tonight. I hope to see you for our hour-long special, trump the white house interview tonight at 10:00 P.M. Eastern. Our sitdown and walk through the white house later. Lacks Marty wa President trump's controversial move on immigration.
This transcript has been automatically generated and may not be 100% accurate.