There has been a flood of books on this topic in the last year or two, so I decided to compile a list. I have read roughly a third of the books listed below (and hope to get through some of the others in due course.)
From what I have read (in these books and the general technogy/business media coverage over the last two years or so), the main arguments seem to broadly fall into one of three categories:
 We are all doomed, because there will be no work left for any of us in a few decades.
 There is nothing to worry about. New kinds of jobs (that we cannot even imagine today) will be created, and we will all be fine.