Bushmen: People of the Wind (CNN, 5:30-6 a.m.): In Africa the San people, also known as the Bushmen, are believed to be the continent's oldest surviving race. But their 20,000-year-old culture, rich in tradition, faces encroachment by the mainstreaming influences of other civilizations. This special visits the San homelands in Botswana, Namibia, and South Africa and reports on the challenges facing their unique lifestyle.
The program repeats Sunday at 3 p.m.
The Visionaries (public television stations, broadcast day and time vary): Highlighting the social triumphs and personal rewards of volunteerism, this documentary series launches its second season with two half-hour programs on Volunteers of America. Celebrating its 100th anniversary this year, the human-services organization tailors programs to meet the needs of each community it serves. The show illustrates this philosophy at work as it profiles a homeless shelter in New York; a youth-empowerment program in Shreveport, La.; a correctional center for women in St. Paul, Minn.; and a soup kitchen/meals-on-wheels program in Denver.
Other episodes in "The Visionaries" look at Hadassah, the United States' largest Jewish women's organization; Pact, an international development agency assisting emerging democracies; and AmeriCares, a multifaceted social-service agency.
Sisters (NBC, 9-11 p.m.): The nighttime serial, which has followed the tumultuous affairs and woes of the Reed sisters, ends its five-year run with this finale. The episode looks at how the sisters carry on after the death of their mother. The show has received several awards over the years, including an Emmy for actress Sela Ward.
*Please check local listings for these programs.