I remember next to nothing about Red, my first Pokemon game, since I was 5 or 6 at the time. I don't remember a lot of specific things about Gold or Crystal, but I sure remember a lot of nostalgic feelings about them!
One unfortunate event that I do remember. I was training my Tyrogue, and I must not have been holding the Gameboy very firmly. It slipped and hit the hard floor, and I think the Gameboy broke AND I lost the save data :( I was so attached to those Generation 2 games.