If so, how many of them have you read, and which are your favourite and least favourite, and why?
I came late to Sir Terry, and am currently about half-way through the books. I read the first seven in the series in order, but then started reading them in any order. I think my favourite so far is probably 'Thief of Time', because of the brilliant premise about pumping time from where it's not needed to where there's never enough. Least favourite - probably 'Carpe Jugulum', which I found over-long and heavy going. I did like Mightliy Oats, though. I'm currently half-way (almost exactly) through 'Moving Pictures'.