Fantastic video, those are way more than mere smiles! Everyone needs a video like that of their kids.
Sudden & serious technology envy. When my daughters were born 8 mm home movies were still the thing and well beyond my means. When my son was that age a bulky shoulder held video camera with a separate VHS machine on a strap recorded those memories. Now its not one but two cameras on the bike and easy editing on the home computer. All hail Steve Jobs and thanks for the post Tim.