A book from 2004 (first version 2003), where Al Franken, a US comedian and liberal, exposes some lies and dubious acts of Republicans and American right-wing media (Fox News and the like). Quite a hilarious book. Though, assuming that Al writes mostly truth, which he claims he does, it is also a rather saddening treatise -- I was kind of hoping that the politics and media in US are not THAT dirty.
So, if you'd like to read a highly satirical and amusing book about real American politics and media, then take a look at "Lies and the Lying Liars Who Tell Them". But, of course, keep in mind that it isn't exactly a balanced analysis.
More info about the book at Amazon: http://www.amazon.com/dp/0452285216/
and Wikipedia: http://en.wikipedia.org/wiki/Lies_and_the_Lying_Liars_Who_Tell_Them
And thanks to Chätrin who gave me this book as a birthday present!