This one (Word/Million) is indeed fantastic.
For other possibilities, if you have the money to spend, any version Ted K's Mother of All Book Tests is an incredible piece of work (the newest paperback version being the most convenient).
Also reliable, and with a multitude of possible reveals, is Becker's Ultimate Flashback.
My favorite go to for any book, including borrowed ones, is Steve Valentine's "Booked." I've had the pleasure of frying strangers in the bookstore with his secret (which can also be presented in a more magical context with a Pegasus Page plot).