Programs on the radio and television may be referred to formally as broadcasts or informally as shows，especially in American English.The person who presents a program or a show on the radio or TV is a host or hostess but the one who hosts a popular music program is called a disc jockey or DJ.News programs may be hosted by an anchor，either a man or a woman，who is sometimes more famous than the person in the news.In more traditional news programs，the news is read by a newsreader.