Some of you may know that Terry Jones wrote a book on Chaucer's 'The Knight's Tale' - his theory was that the whole thing was a contemporary satire, and that the 'gentil knight' was in fact a ruthless mercenary. We studied Chaucer at school for O-level (GCSE), and someone managed to persuade Terry to come and talk to us about his book.
I can't remember any of the details, partly because this was over 35 years ago but more because our class of teenage boys was awestruck at being in the same room as a Python. I do remember that Mr Jones was as funny and charming as you could have hoped.