Well, for me, my most memorable moment of my play through of Pokemon silver (9 years old) was when i was training my pokemon, and out of no where, suicune popped up! I was so exited because i had a master ball on me, so i caught it, and gleefully looked at my party so i could begin training him as well, and i checked in my party, i came to find that i already had 6 pokemon with me. I didn't knwo about the PC or what it did, so i thought i lost my suicune and i got really mad. So i was thinking of restarting my game over, but that minute, my friend told me about the PC and i went in it and got my suicune, and happily walked out of the pokemon center, glad that i still had that suicune.
Ah man, i remember the good old days where everyone just played pokemon for pure fun and enjoyment, now everyone just wants to best one another. *sigh* oh well, at least i have memorys...