The bygone TV host in question is Jack Paar, who was an American television personality, comedian, and author. He was best known for hosting The Tonight Show from 1957 to 1962. Paar was known for his wit and humor, often making jokes about current events and celebrities. He was also known for his controversial monologues, which often pushed the boundaries of censorship. Paar was a pioneer in late-night television, paving the way for future hosts such as Johnny Carson and Jay Leno.