I got my first "Horrible Histories" book when I was in London for a conference. I loved the authors' instincts about how to make corny - but not too corny - jokes about history and provide a lot of facts of daily life that aren't captured in traditional history materials. They use alliterative titles like "Rotten Romans" or "The Terrible Tudors" (the latter is the book I bought).
Well, they have a TV show that is based on snippets taken from the various books. The TV show bounces through the time periods more than I'd like, but they caught the irreverence and wit of the books.