Shiny Pokemon Encounters

[Baegal]

I've witnessed four legitimate shiny sighting, but can really only claim one.

The one I found was a Zubat in the Dewford cave while I was level grinding. I don't think I've ever been so nervous.
The other time was last week actually when I showed my cousin my Japanese copy of B2. The second she walked in a patch of grass, shiny magnemite. We caught it, but I'm letting her have it because she found it.
The other two were when my brother felt like playing someone else's games. He started over my cousin's SoulSilver and manages to find a shiny Cyndaquil.
The other time was in my Leafgreen, he found a shiny Nidorino in Safari zone, but it ran away...