In the comments on the Collide-a-scape thread, Judy Curry has issued a challenge to mainstream climate science:
I am laying down the gauntlet, [The Hockey Stick Illusion] really needs to discussed and rebutted by the paleo researchers and the IPCC defenders.
Most of the responses are fallacious so far - along the lines of "a bad person liked this book". Let's see if anything more substantial appears.