Inner Game of Tennis is still ranked ranked among the top 1000 books on Amazon, and it's #1 in 3 categories. Impro is not much behind on the sales rank, so I'

Inner Game of Tennis is still ranked ranked among the top 1000 books on Amazon, and it's #1 in 3 categories. Impro is not much behind on the sales rank, so I'm guessing still quite a few people buy it. If you ever take an improv class, your teacher will most likely recommend it.