The Exploratorium, a science museum in the Palace of Fine Arts in San Francisco, ran a cool exhibit a few years back. They had people write in and describe their first memories. These varied, from watching african violets in the rain, to eating rat poison, to recognizing a mother, to getting trampled by a herd of sheep. Anyways, the exhibit is no longer accepting memories, but all the past memories are posted on the site. There are hundreds of them. Check it out. And the rest of the Exploratorium's site.

(And yes, that's a picture of a child eating a dog's bowl of food. Love the expression on the dog's face.)