I got a shiny Oddish and Pigey in Silver. A shiny Grimer in ruby. A shiny Maril, which evolved to a shiny Azurmaril, and a shiny Togipe in Platinum. Then a shiny Miccino, and a shiny Palpitoad which is now a shiny Seismitoad. --- http://www.gamefaqs.com/boards/615803-the-elder-scrolls-v-skyrim/62287165 - restored faith in humanity. 1/14/2013, shipment date
My first shiny was a Zubat from Seafloor Cavern in Ruby. It even had decent IVs and a beneficial nature, but I didn't know that at the time. I was just happy I got a shiny Zubat (now a Crobat). Kept transferring it throughout the games, and still use it. --- The World Ends With You 2 in 2012? I sure hope so! Official Shiny Victini of the Pokemon B/W 2 and PMD: MMM boards.
Aside from the Red Gyarados in HeartGold and the 3 Legendary Beasts that were part of a Wi-Fi Event, I haven't encountered a single shiny pokemon yet. Oddly enough though, I did get the Pokerus which is even rarer.