I borrowed a copy of this book from the library at Uni almost by accident and to be honest it is prehaps the most thought provoking, fun, enjoyable, fasinating, happy, sad, and just fantastic book i've ever read on existentialism.
Yalom is such a witty and subtle writer and his knowledge of literature is amazing. I found myself reading various books from his bib, books i'd very have dreamt of as being my cup of tea.
The book itself could have a profound effect on your preception of life, love and the universe, it did for me, you seem to see yourself and those around you in a completely different. For example our constant (and hidden) fear of death or fear of not existing has just a major effect on our society and how we talk with each other, organise ourselfs and our attempts to organise those around us. I found the book to be a bit like a spotlight, highlighting with a cold, stark white light just what my existence and everyones existence can be. My light does get dime quite often and I slip back into my well practised bumble through life but now and again the power comes back on and I can see the funny side you life.
Anyway this is a ramble so even if you dont really care for existentialism and all that I promise you that its still a great read.