-Getting my first Pokemon, Bulbasaur. The Bulbasaur line are my favorite Pokemon (little known fact).
-Falling in love with Ho-oh once it was "officially" unveiled.
-Seeing the first few new Pokemon in their VERY, VERY early forms. I remember Feraligatr looking like a dinosaur.

-Getting Gold Version
-Seeing the movies in the theaters
-Talking about the newest episode aired everyday at school.
-Lots of other stuff
Gosh, I feel old as hell, and miss being a kid.
Note: Kids. Cherish your young days. You'll long for them when you're going on 20, as I am. ;-;