He helped develop the technique of guitar feedback and overdriven amplifiers.
► Oprah Gail Winfrey (1954 - ) is the American multiple-Emmy Award winning host of The Oprah Winfrey Show, the highest-rated talk show in television history. She has been ranked the richest African American of the 20th century,the most philanthropic African American of all time, and the world's only black billionaire for three straight years.
►William Henry "Bill" Cosby, Jr., Ed.D. (1937 - ) is an American comedian, actor, television producer, activist, and luminary. He received the 3 Emmy’s, 2 Golden Globe Awards and 9 Grammy Awards