All I can say is it's about freaking time! Ever since I realized fire was going to be Harry's on going schtick, I have been waiting for that particular Prachett reference to show up, and now it has.
In other news, Santa is a badass, pixies are officially the new number one on my list of most terrifying fae, and the conflict with Red Cap was one of the best written fight scenes in the series as far as I'm concerned. This book already rocks, and I've barely scratched the surface.