I think it's safe to say both Jackson and Griffin inherited the obsessive gene from me. Both discover something they love and forsake everything else until they find their next interest. Currently for Jackson, it's baseball and for Griffin it's the unlikely trio of Max & Ruby, Dinosaurs and Bruce Springsteen (case in point - as I type this he's watching a Max & Ruby DVD, flipping through his favorite dinosaur books and serenading the neighborhood with his rendition of Radio Nowhere).
The first book Jackson started to read/memorize was The Berenstain Bears and the Big Road Race. He was between 2 and 3 and it was during his cars and trucks phase. The book is basically a retelling of the tortoise and the hare story except it's got bears driving race cars through the countryside. What could be better?
The other night I found his coverless copy of the book and read it to him at bedtime. It was a little hard to tell how much he remembered it but his dear old dad remembered it fondly.