At 8.00pm PT tonight Roger McNamee will be interviewing one of the icons of the psychedelic rock movement, known for her witty lyrics and powerful contralto vocals, the inimitable Grace Slick, singer, songwriter, and former model, best known as one of the lead singers of the rock groups The Great Society, Jefferson Airplane, Jefferson Starship, and Starship, as well as for her work as a solo artist from the mid-1960s to the mid-1990s.