This book was given to my 14-month-old daughter as a gift because her parents dressed her as a possum for her first birthday. Cute, huh? No really. It WAS cute. You should see the pictures.
Anyway, while the illustrations leave something to be desired, the key to Possum Come A-Knockin' is the cadence with which you read it aloud. First, adopt a north Georgia mountain accent (if you do not, the text practically backs you into one), and proceed at a measured clip. A couple of deep breaths are required to get through passages that run from one page to the next, but that's part of the fun. It's quite catchy and addictive. My daughter usually wants us to read this book at least twice a night to her.
Also, take my word for it that at the end of each page when the phrase "knockin' at the door" is read, you should then click your tongue or clap your hands or something twice. Our daughter now makes double sounds at the end of almost every page, which is cute. No really. It IS cute.