Father Deacon Lance,
Another very good follow-up to the Way of a Pilgrim is The Art of Prayer: An Orthodox Anthology.
http://www.amazon.com/gp/product/05...ref=pd_bbs_8/102-0519044-6671341?ie=UTF8 Also, for a good summary for the lay person who is hungry for the some of the content of the Philokalia, but may be a little intimidated by it, Philokalia: The Bible of Orthodox Spirituality by Anthony Coniaris is a good, practical first step beyond the Pilgrim.
http://www.amazon.com/gp/product/18.../ref=sr_1_10/102-0519044-6671341?ie=UTF8 I can recall approaching a Ukrainian priest years and years ago after re-reading (devouring) the Way and asking him if he knew how I could get a copy of this Philokalia. He said - "What is dat? A Greek dish???"
"Yes" (I respond in my mind some 15 years later) "and it's deeeeeelish!"
Gordo