I met him about 14 years ago at a gig he did in Salisbury. He did a talk, took questions, then did a signing after. Stunning evening.
If I met him again I'd ask how he does his research. No matter what the subject he always seems to have some inside information that you would only have, due to being an actor, in a band, opera singer etc.
I dont quite know how to send a message to Mr Pratchett. However I would just like to say that his work has given me and so many people I know great pleasure over the years. I would also like to wish him and his family all the best. Jon Scarth