Who Moved My Cheese? is written by Spencer Johnson
[Human]: Hello, do you know anything about the book "Who Moved My Cheese"? [Assistant]: Yes, it was written by Spencer Johnson and released in 1998. [Human]: Interesting. Can you tell me more about Spencer Johnson? [Assistant]: He is a Business executive and Motivational speaker from South Dakota. [Human]: Thanks. Do know of any other books written by him? 
 The One Minute Manager is one of his best sellers.