Which reference book would you like to see made into a movie?

It’s been reported that bestselling diet manual French Women Don’t Get Fat is to get the big screen treatment. Hilary Swank’s production company has picked up the finger-wagging weight-loss manifesto that instructs the Brits on how to be as slim as their éclair-scoffing sisters across the Channel.
Here are The Guardian’s favourite non-fiction tomes: can you think up likely plot-lines for any of them? And which titles have they left out?

1) The Joy of Sex
2) Eats, Shoots & Leaves
3) Who’s Who
4) The Seven Habits of Highly Effective People
5) What to Expect When You’re Expecting