One of my favourite authors, Bill Bryson. He travels around the world and makes everyone laugh with his books. This time, he doesn't even leave the house, he describes the history of the world (well, mainly Britain and America) while walking through the different rooms in his house. Highly interesting, highly amusing. One of the easiest way to pick up a lot of knowledge.
I have read so many different books by this guy that I have an extra page for him: Bill Bryson - Funniest Author Ever