Daytime talk queen Oprah Winfrey uses her celebrity to power Oprah's Angel Network. "I want you to open your hearts and see the world in a different way," Winfrey said in 1997, encouraging her viewers to send in their spare change. In three years, the network has built 200 homes for Habitat for Humanity and sent 150 students to college. Winfrey also gives a weekly "Use Your Life Award" of $100,000 to a local hero who improves the lives of others. Past recipients include a music school and a group that provides home and business loans to inner-city residents. Winfrey often features charities on her talk show, bringing them national attention.