A new book by former CIA employee Lindsay Moran discusses the author's employment with the Agency and will likely be of interest to those considering a career in the CIA.
Blowing My Cover: My Life as a CIA Spy (Putnam, 295 pp.) provides an account of the hiring process (including the polygraph), training at Camp Peary ("The Farm"), and work as a case officer under diplomatic cover.
I have not yet read this book, but reviews are available here:
http://www.usatoday.com/life/books/reviews/2005-01-12-blowing-my-cover_x.htm
http://www.tampabay.com/aboutbooks/review.cfm?reviewID=110223
An article based on an interview with Lindsay Moran is available here:
http://www.telegraph.co.uk/arts/main.jhtml?xml=/arts/2005/01/11/ftwar11.xml
And the transcripts of two interviews are available here:
http://edition.cnn.com/2005/US/01/11/spy.life/
http://www.sptimes.com/2005/01/09/Perspective/Little_cloak__less_da.shtml
I just finished the book. While I can't speak to the training and the day-in-the-life experiences, I can tell you that my polygraph experience was nearly identical to that described in the book.
The first chapter of this book is now available on the website of the New York Times here:
http://www.nytimes.com/2005/03/11/books/chapters/0311books-moran-excerpt.html