1. Sonny and Cher open the show with ""Don't Pull Your Love"" and banter about the Christmas presents they gave each other. 2. ""The Heartbreak Of Psoriasis"" -- Sonny and Cher are cast as a philandering pharaoh and his unfaithful queen in a soap opera spoof set in ancient Egypt, where the inhabitants speak in the modern idiom of TV commercials. In tonight's episode, Queen Psoriasis (Cher) has fallen out of love with her husband and is having a torrid love affair with the slave Eczema (Don), while the Pharaoh Neuritis (Sonny) is secretly seeing the queen's handmaid (Joey) behind her back. 3. Cher sings ""Yesterday"" 4. A nervous Don goes into a singles' bar to meet a girl and mistakenly thinks a female voice he overhears is talking to him. 5. Sonny and Cher perform a medley of ""We'll Sing In the Sunshine"" and ""You Are My Sunshine"" 6. Alvin (Sonny) asks Herbie (regular Ted Zeigler) to be the best man at his wedding and looks over travel brochures with Laverne (Cher) as they make plans for the