When I was six something possessed me to read Harry Potter. Didn't understand a word of it since, you know, I was six, but I somehow knew it was good enough to read all the way through (all of them), and re-read a dozen or so times after that.
Seventeen years later I still live and breathe it.
When I was a little baby boy I used to be really into classical music. I remember I used to watch a bunch of baby Einstein dvd's, and those were about Bach and the like. I even named one of my first stuffed animals Mozart.