"Letterman" refers to David Letterman, an influential American television host, comedian, and producer. He is best known for his late-night talk shows, particularly "Late Night with David Letterman" and "The Late Show with David Letterman." His unique style, characterized by humor and unconventional interviews, helped shape the late-night television landscape. Letterman's career began in the 1970s, and he became a prominent figure in entertainment for over three decades. He is recognized for his iconic segments, such as the "Top Ten List," and has received numerous awards, including multiple Emmy Awards. His impact on comedy and television continues to be felt today.