Keep U. S. Beautiful was a comedy-variety special with an anti-pollution/litter theme, which debuted over NBC on March 27, 1973. Hosted by Raymond Burr, the special was divided into a series of sketches, with celebrity performers. Other performers and skits included Lena Horne (singing "Smoggy Weather"), Ruth Buzzi (as a secretary in a noise pollution sketch), Don Knotts (as a nervous lecturer), Tim Conway (as an endangered eagle), Flip Wilson, Sandy Duncan, and Carol Burnett.