I've often wondered if someone has compiled anything about the "special letters" in the Torah: All the letters that are either big or small. Together, do they read as something special? One or more anagrams?
(I suppose this was prompted by last week's parsha with the Shema and the עד at the ends of the first and last words.) Also, I think there are fewer "small" letters than large ones.
Perhaps a book about Torah codes has an answer?