Who is this person?
(from his own bio: http://www.sethgodin.com/sg/bio.asp)
Seth Godin:
* writes the most popular marketing blog in the world;
* is the author of the bestselling marketing books of the last decade;
* speaks to large groups on marketing, new media and what's next;
* and is the founder of Squidoo.com, a fast-growing recommendation website.
Put everybody in a room and divide it up into groups of people who have read and been influenced by Seth Godin and people who haven’t.
Then hand the latter (and smaller) group some of Seth’s books.