Usually, guests consist of a group of people who are learned or who have great experience in relation to whatever issue is being discussed on the show for that episode. Other times, a single guest discusses their work or area of expertise with a host or co-hosts. A call-in show takes live phone calls from callers listening at home, in their cars, etc. Sometimes, guests are already seated but are often introduced and enter from backstage. There have been many notable talk show hosts; in many cases, the shows have made their hosts famous.
Talk shows had been broadcast on television since the earliest days of the medium. Joe Franklin, an American radio and television personality, hosted the first television talk show. The show began in 1951 on WJZ-TV (later WABC-TV) and moved to WOR-TV (later WWOR-TV) from 1962 to 1993