Conversation so far:
What did Johnny Carson do in early radio?
Johnny Carson began his broadcasting career in 1950 at WOW radio and television in Omaha
Did Johnny Carson have a huge audience?
Johnny Carson's show Who Do You Trust? became the hottest item on daytime television during his six years at ABC.
Are there any other interesting aspects about the Johnny Carson article?
In 1955, Jack Benny invited Johnny Carson to appear on one of his programs. Benny predicted that Carson would have a successful career as a comedian

Question: Which shows did he host?
Self-contained rewrite: Which shows did Johnny Carson host?