>I'll always upvote a recommendation for Amusing Ourselves to Death. I haven't yet gone back to Understanding Media directly yet.

I love both books, but when you read Understanding Media you will see how blatantly Postman just restated McLuhan's basic thesis and pretended to tweak it to make it his own ("the medium is the metaphor" has the same meaning as "the medium is the message"). However, I found where Postman's book really excelled was in its presentation of the historical changes in literacy in the US. I knew we were a literate country once, but I didn't realize just how much we were.