Catherine Serreau reminds us on eteachNet that Roald Dahl would have been 90 on September 13th. You can find a very useful page of links on her site:
http://englishacademy.site.voila.fr/roalddahl.htm
You can also find resources about Roald Dahl' short story "Lamb to the Slaughter" in le Café Pédagogique
http://www.cafepedagogique.net/lemensuel/lenseignant/languesvivantes/anglais/Pages/2005/59_accueil.aspx