I really loved the historical biography Victoria the Queen: An Intimate Biography of the Woman Who Ruled an Empire, by Julia Baird.
It was the perfect mix of detail and good writing, and Baird did a nice job of touching upon all aspects of Queen Victoria's life, including her relationships with the many Prime Ministers she worked with over her long life; her relationships with Albert, her husband, and their nine children; and her ruling style, opinions, and personal traits. Baird also does a nice job of placing Victoria's reign and Great Britain's influence in the nineteenth century in the broader context of world events. And she does it all in...let me look it up...752 pages?!?
Holy cow. This book read so fast that I really thought it was a lot shorter than that. Rest assured: a good chunk of that total is index and endnotes. And there's a lot of pictures spread through the book too. It was a great read; if you're at all interested in British history you should pick it up. (Particularly if you're watching the period drama Victoria on PBS that's running right now; if you read this, you can feel superior about all the historical details with which the BBC/PBS is playing a little fast and loose).
Just to give you a taste of the text, and for Victoria herself:
"What is most striking about Victoria is that apart from wanting to be taller and thinner, she cared little about her appearance. She knew she was no beauty and did not dwell on it. She joked about her looks with her half sister, writing that she was 'very happy to hear that the portrait of my ugly face pleased you.' Yet she genuinely took pleasure from the aesthetic appearance of others--both male and female. Her second cousin Charles, the Duke of Brunswick, particularly fascinated her, with his dark mustache and the fur-trimmed coat he wore riding. She greatly admired the way he did his hair, which hung 'wildly about his face.'" p. 43.