Andy WilliamsWill HighlightTop PerformersJoey Heatherton, Lena Horne, the Osmond Brothers and Jonathan Winters are spotlighted on NBC Television Network’s “The Andy Williams Show” colorcast Sunday, Nov. 20 (10-11 p.m. NYT).Andy joins singers and dancers in the opening production • number, “So What’s New.” Then Joey Heatherton sings and dances to “A Man, a Woman.” Andy and Joey sing “Going Out of My Head.”Jonathan Winters impersonates a motherly motel owner chatting with travel-weary Andy about suitable accommodations. Winters then describes a hunting scene as viewed through the eyes of a sportsman’s dog.Andy and Osmond Brothers sing and swing to “Walking on New Grass.” The Osmonds, each seated at a grand piano, play “I Love a Piano” and “Old Piano Roll Blues.”Lena Horne and Andy harmonize: “Talkin’ the Blues,”“Ac-Cent-Tu-Ate the Positive,” •“Singin’ in the Rain,” “StormyWeather,” “Let a Smile Be YourUmbrella,” “A Foggy Day,”and “Great Day.”The program closes withAndy singing “If I Love Again.”NBC News presents a profile on Gov. George Wallace of. Alabama on “The Frank McGee Report” Sunday, Nov. 20, on the NBC Television Network (6-. 6:30 p.m. NYT, in color).NBC News correspondent Charles Quinn, who has covered the Alabama governor for several years, reports an in-depth look at Wallace, who is expected to run as an independent in the 1968 Presidential election.Frank McGee will report on world and national news.