Book In-Jokes in...
by Leslie Lamport
On page 221, which is the index, we find the following entry:
Gilkerson, Ellen 221Ellen Gilkerson, who is Lamport's significant other, is not mentioned anywhere else in the book.
The chapter called “The Game of the Name” explains that the word “LaTeX” can be pronounced in any way you want. This is a reference to Knuth's The TeX Book, where there's a chapter called “The Name of the Game”, giving the exact guidelines for pronouncing the word “TeX”.
Special thanks to Bernd Baumgarten and Daniel Abraham for contributing these items.