Rosemary gave me a magnetic pad for the fridge and The Book of General Ignorance.
It has longish entries on misconceptions that include interesting tangential data. For instance, the entry "What shouldn't you do twenty minutes after eating?" not only assures you that swimming is O.K.--"Even if you overeat before swimming, the most likely result is a stitch in the side or a touch of nausea."--but they also list several strange causes of accidents in the U.K.
It's a fun book.