In case someone missed this one (or I missed the note about someone not
missing this one):

  http://www.ercb.com/ddj/2001/ddj.0102.html

They wrote:

  Overall, I give this book full marks, and I think that it
  deserves to become the standard reference for Ruby programmers.

They didn't realize it is already the standard reference right after source
code :). Or that there's a tool like ri. (Well, to be precise there wasn't
any when they wrote the review... :)

	- Aleksi