The Oprah Winfrey Show

 On the October 1, 1999 show, Oprah and guest Donna Rice Hughes demonstrate examples of how children could unintentionally access pornographic sites with unfiltered Internet access. Later in the show, they demonstrated filtered access through which blocked those same pornographic sites.

The Oprah Winfrey Show archive highlighting the show.

Oprah's Online Parent's Guide (featuring FamilyClick)