I heard a lot about this book last year at a book conference I attended and just got the chance to read it now. (I read a lot, but sometimes I run out of time with my ever-growing "to read" list!). I am glad I finally got to read it with my boys. I feel like a lot of the fun in the book is in the illustrations, and it definitely showed some observation skills and deeper thinking in my 8 year-old, who picked up on the ending before my younger son did. Sam and Dave decide to keep digging in their yard until they find something awesome. The trouble is, you can see from the illustrations that they just keep missing the awesome things. The ending is strange but funny, and my boys were laughing and pointing at the things the boys kept missing. A quick, fun read!