I would love to hear them ^^ Here's mine:
My first shiny I got was on Pokemon: Silver. I was training after beating the elite four, and I came across a shiny Rapidash. I was super excited unitl I found out that my game reset itself It will no longer save anything at all
My second shiny pokemon I got was on Pokemon: Pearl. I was leveling up my pokemon in the marsh to prepapre to battle Crasher Wake, and I found a shiny Bibarel. I still have her, but she is now on my Pokemon: Black. Before I traded her, she competed in beauty contest.
Of course there is shiny gyardos, but that's not that exciting considering it's garanteed to be in the game