Forgot to mention another book I read recently. Letter and Spirit : From Written Text to Living Word in the Liturgy By Scott Hahn. (Link Above)
It deals with the relationship between the Catholic Mass and Scripture. One of the primary tests of a book's validity and Inspiration was its suitability for inclusion in the Liturgy.
Good book, but he still hasn't returned to the heights of Hail, Holy Queen
, The Lamb's Supper
or Rome, Sweet Home