Bob Geldof: Bob Geldof. Actor: Pink Floyd: The Wall. Bob Geldof was frontman for the late '70s to mid '80s Irish punk rock band the Boomtown Rats. He also conceived and co-wrote Band Aid's tune "Do They Know It's Christmas?" with his friend, musician Midge Ure of Ultravox, which became the 1984 Christmas number one in the UK and the best-selling British pop single until that time. Band Aid later evolved into...