The Potty Book --consisting of a "Henry" version for little boys, and a "Hannah" version for little girls--has been a very popular seller, as well as a godsend to moms and dads, ever since Barron's first published it a few seasons ago. Now, the humorous potty-training stories of Hannah and Henry are being reintroduced in a pair of DVDs that kids can watch on their TV. Parents of little boys will want this, the "Henry" version. Henry needs to have his diaper changed before he can go out and play. But Mom and Dad have just brought home a big package, and he's anxious to see what's inside.