Funny little pregnant things

Today's pregnancy books may no longer recommend martinis and cigarettes to help pregnant women relax, but most offer moms to be a ton of worthless information--like what kind of fruit your baby is the size of at Week 16. Is there any practical value in knowing that your child resembles produce? And wheres the good stuff--the useful details, like beware of the baby registry and all the crap you will never use, or be prepared to get breast milk all over everything you own?