I have to confess that Hahn's style annoys me sometimes--too much cutesy punning for my tastes, and I wish he'd just settle down and play it straight--but this book opened up the Mass for me into four complete dimensions by tying it into the Temple and pointing out, rather convincingly, its place in the Revelation, or vice versa, and showing it as an almost extra-temporal event!
Not quite as taken with some of Hahn's other books--it's that light, cutesy style that just rubs me the wrong way from time to time, but the guy does his research and is generally very readable.
And yeah, The Lamb's Supper is a book I would recommend to anyone who wanted to know what is going on in the Mass and why it has its form, or even someone who would like a little speculation on the book of Revelation--that is, for the person who is actually willing to learn rather than to gather contention-fodder.
But one suspects that this tribe is getting smaller yearly--maybe hourly!