Just finished reading 4 books about Julius Caesar (thanks Paul) which made for fascinating reading. They follow his story from being a young boy to his famous death on the Ides of March. Lots of facts were massaged to make a better story but Con Iggulden explained what had changed at the end of each book. Amazing to think how much of our world was conquered/changed by Roman influence and in particular by individual rulers such as Caesar.
Anyway the books are