Oh, I remember my first shiny encounter, shiny kricketune. I had played through Ruby, Sapphire, and Emerald, and FireRed and LeafGreen, and had never gotten a shiny no matter how many times I restarted the game (my best friend had a shiny wurmple and I thought you could get it if you reset often enough). I was just going through the area between Pastoria and the mansion on Diamond when kricketune showed up, and I freaked out. I was so happy to finally get my long-awaited shiny. At least it didn't turn out to be a freak occurence when I later got a shiny psyduck on Pearl, and a shiny graveller on Platinum (and so on).