text: During the summer of 1957, Kovacs was a celebrity panelist on the television series What's My Line?, appearing in 10 of the season's 13 episodes. He took his responsibilities less than seriously, often eschewing a legitimate question for the sake of a laugh. An example: Industrialist Henry J. Kaiser, the founder of an automobile company, was the program's "mystery guest." Previous questioning had established that the mystery guest's name was synonymous with an automobile brand, Kovacs asked, "Are you – and this is just a wild guess – but are you Abraham Lincoln?"—a reference to the Ford Motor Company's Lincoln automobiles. Kovacs gave an interview admitting that he was absent from the show when he wanted to go out for dinner on a Sunday, leading the reporter to offer that as the reason for Kovacs leaving the series. Actually, Kovacs's participation ended because his contract was up—the summer season was over. Goodson and Todman valued Kovacs's presence in the summer series and kept him on as a guest panelist. According to What's My Line? producer Gil Fates, "We offered him a contract and a permanent place on the panel but, wisely, Ernie didn't want to tie himself down [to New York] at that point in a burgeoning career. He did his last show with us in November of that year, then went to California to work and live."
  TV specials
  He also did several television specials, including the famous Silent Show (1957), featuring his character, Eugene: the first all-pantomime prime-time network program. After the end of the Dean Martin-Jerry Lewis partnership, NBC offered Lewis the opportunity to host his own 90-minute color television special. Lewis opted to use only 60 minutes, leaving the network 30 minutes to fill; no one wanted this time slot, but Kovacs was willing to have it. The program contained no spoken dialogue and contained only sound effects and music. Featuring Kovacs as the mute, Charlie Chaplin-like character "Eugene", the program contained surreal sight gags. Kovacs developed the Eugene character during the autumn of 1956, when hosting the television series The Tonight Show. Expectations were high for the Lewis program, but it was Kovacs' special that received the most attention; Kovacs received his first movie offer, had a cover story in Life magazine, and received the Sylvania Award that year.