I read in one of the books about Saturday Night Live that a rival show on ABC had been called Saturday Night Live when Lorne Michael’s creation debuted. It was a short-lived comedy-variety program hosted by Howard Cosell and featuring guests like Evel Knievel and Muhammad Ali and a cast member named Bill Murray. It aired live from the Ed Sullivan Theater. The Saturday Night Live on NBC that we all know was originally called Saturday Night to avoid conflict over the title. This is a promo that ran for the Cosell show.