For a while there I thouht I was the only one who despaired for quality in management books.
But then I came across Espen making the following observation:

But the question remains: Why do stupid and simplistic management books – books that the thoughtful and well grounded managers I tend to talk to wouldn’t touch with a ten-foot grounded earth excavator – sell so well?

Espen uses Who Moved My Cheese as a case study of this genre. I’ve never read the book but have had the same reaction to many others I’ve seen. Read Espens piece here.
Thanks to Bleeding Edge for pointing me to Espen.