Critic, essayist and cultural savant A.A. Gill is probably the most widely read columnist in Britain. His books The Angry Island and A.A. Gill is away have found delighted fans in America as well, and sparked a loyal following. His new book of travel essays, Previous Convictions, ranges from Gill's nearby domestic locales of Glastonbury and the English countryside to Haiti, Guatemala, Pakistan and exotic, dangerous, downtown...