A couple months ago I was on Banana Fudge Swirl, a photographer that started a kids blog, and Chenin recommended Mo Willems books. We still haven't read the one she recommended but have read at least a half dozen of his books. Logan's favorites are the Elephant & Piggie series books. His absolute favorite is I Am Invited to a Party. He loves it so much that his birthday party this weekend is going to be based after that book. So if you have kids you should check it out. It also helps to use silly voices for each character.