Derek O'Brien has been entertaining us with his quizzes for two decades now.  From his vast repertoire of questions that span the informative and educational, thought-provoking facts and trivia, he has gleaned hundreds of his favourite sets for this unputdownable volume.  The questions cover subjects as diverse as the Chinese New Year, coffee, crocodiles and Cleopatra to the Grammy Awards, Gujarat, Mars, swans, tsunamis and West Asia.  There are also sets of questions on famous personalities like Asha Bhonsle, Isaac Newton, Lady Diana, Pablo Picasso, Shakespeare and Winnie the Pooh.  Each set tests both the extent and depth of the readers' knowledge on the subject.  Among the questions readers will find answers to in this book are: Millions of years ago, which super-continent did Antarctica originally form a part of?  What were the two styles of shading which Leonardo used to great effect in his paintings?  What special feature of a camel's eyelids protects it from dust and sun?  What is the study of fishes called?