Books like Impro for Storytellers

I never wrote about Impro, the other Keith Johnstone book I read during my degree. And I feel like I had also already read this one, although maybe not the whole thing; maybe just bits of it for consultation. Because the thing is, with Keith Johnstone's books, although you read them, you don't really finish reading them; particularly if you do improv. They are excellent resources to look for exercises, for when you feel stuck, or when you're having a crisis of faith in improv...But don't think it is just a handbook or collection of exercises. Contrary to other books that are just lists of exercises or just theory/philosophy of improv (like others I wrote about like Improvisation for the Spirit: Live a More Creative, Spontaneous, and Courageous Life Using the Tools of Improv Comedy, The Philosophy of Improvisation or Group Creativity: Music, Theater, Collaboration), this one combines the best of both worlds - in a balance quite similar to Why Is That So Funny?: A Practical Exploration of Physical Comedy - another book that is a good read if you're an improviser. It gives some exercises with examples of instances where he used them or taught them, sometimes he speaks in depth about the theory, and he always explains the function of the exercises or what works within it or not - it is all very justified. It has a good balance of his personal experiences with imaginary examples that are interesting and clarify the exercises and their points. Let's be clear; Mr. Johnstone is very demanding and there are many things he disagrees with (many that I see being done on stages constantly). I tend to agree with him: there are so many things that have been integrated in our improv practice because they are "funny", "charming", and because improvisers see that they make the audience laugh, so they are repeated non-stop even though they stop being funny when they stop being a novelty, or even if they don't encourage an actively creative practice that is challenging so that the improvisers will improve what they do. Having said that, I'm not sure I would survive the frustration that I imagine one would feel in a class with Keith Johnstone (which I am imagining just from how he writes, so you can have an idea of the kind of tone the book has sometimes). Anyway, even with its critic tone, I think it is a book that anyone who wants to do improv should read - there is a reason why Keith Johnstone is like the father of improv - although I certainly don't see why anyone who doesn't do improv would be interested in it (maybe if you watched a lot of improv? But only if you were excessively geeky). And it is the kind of book you don't just read and abandon; it is the kind of book you keep at hand during rehearsals and while training, that you look to when you feel stuck and frustrated, and, why not? that you pass along to all your improviser friends so that we can all push what we do into being more sophisticated, clean, and, generally, better.