Here's a link to the CNN article.
I'll confess that the only Cleary books I read were the "Klickitat Street" books - that is to say the ones with Henry Huggins, his dog Ribsy, his friend Beezus, and of course, Beezus' unforgettable little sister, Ramona. However, those books hold an honored place in my reading experience - both in my childhood and in my adulthood. A lot of my friends and relatives enjoyed those books, and I knew a couple of kids who liked the "Mouse and the Motorcycle" books as well.
Here's how I propose to celebrate Cleary's centennial: Drop Everything And Read!
And whatever you read, don't think about the theme. Just read and enjoy it.