Following a recommendation on the New Taoist Community forum I bought a copy of Osho's book Tao: The Pathless Path My understanding is that the book has been created by collecting together the transcripts of several talks given by him.
The book takes several of the parables of Lieh-tzu - the third of the trio of great Taoist philosophers alongside Lao-tzu and Chuang-tzu. Osho then discusses the meaning of the parable and explores its subtleties. At the end of the book is a short section addressing some particular questions - such as the relationship between the Tao, Confucianism and Science.
Generally I've been really impressed with this book so far. Some of the flow is a bit weird, but I believe that's probably because it's a transcript of a talk rather than a collection of reasoned essays. Some of the examples Osho gives, particularly in relation to Christianity, I find of little worth - but possibly they were included as part of tailoring the talks for a particular audience. Opinions on Osho seem to vary but I think this book is well worth a read, particularly if, like me, you've only had very limited exposure to the writings of Lieh-tzu.