I'm reading a book at work that my babe Heather so wonderfully and unexpectedly bought for me last week. It's the latest book in the Discworld series by Terry Pratchett called "Going Postal". If you've never heard of the series, or read any of the books and you enjoy funny, clever writing then do yourself a huge favor and go get one. Other than the first two books in the series you can basically jump in anywhere. But for maximum enjoyment read them in order.
"Going Postal" is fantastically funny so far, which I fully expected.