Robert Frederick Zenon "Bob" Geldof, KBE, (born 5 October 1951) is an Irish singer, songwriter, author, occasional actor and political activist. He rose to prominence as the lead singer of the Irish rock band The Boomtown Rats in the late 1970s and early 1980s alongside the punk rock movement. The band had hits with his compositions "Rat Trap" and "I Don't Like Mondays". He co-wrote "Do They Know It's Christmas?", one of the best-selling singles of all time, and starred in Pink Floyd's 1982 film Pink Floyd The Wall.