I got there about ten minutes late (due to aforementioned long walk), but it seemed to be a 'beginner's guide to Terry Pratchett' sort of do, I guess to try and drawn in newcomers to TP. The most I contributed were a few smart-aleck remarks and managing to recommend the novelisation of Doctor Who: Shada to someone (long story: TP was compared to Douglas Adams, and I recommended the book because it was based on a Douglas Adams script).
Have you seen the size of human brains? They're hilarious!
-The Twelfth Doctor