Despite spending many hours on Pokémon Gold, Pearl, Platinum and HeartGold, I have yet to find a single shiny. Funny thing is, I got the Pokérus on HeartGold, which I'm being informed is even rarer than a shiny.
Silver: Meowth Crystal: Zubat Ruby: Magneton Sapphire: Wingull Pearl: Graveler (Spent 5 minutes debating whether or not to throw my Master Ball or risk the inevitable Self-destruct) HeartGold: Tangela (Trained on the Route between Mahogany and the Ice Path for five days. After day three I started to feel like I would hit a Shiny, so I purposely stayed longer than I normally would have. Day five, Shiny Tangela) --- HG FC: 2666 6874 1041 Black FC: 1764 7784 9186