Parenting Toddlers Books

I am currently reading The Happiest Toddler on the Block by Harvey Karp. So far, so good! My son is almost two and is definitely in a defiant, tantrum-throwing stage at times. I read a lot of pregnancy and baby books, but none into the toddler years yet. Next on my list is Playful Parenting. It is supposed to be really great. Basically it tells parents to lighten up and spend a few hours giggling with their kids. Play is inherently educational for children and parents can learn plenty by examining the games kids play--from peekaboo to practical jokes. Definitely sounds like my kind of book. I will report back on both after I'm done. Have you read either of them? I'd love to hear comments.