Hey I was there for that too! what a coincidenceAndy Shandy said:I've had a few down the years, the ones I remember are Machop and Geodude.
Also saw Wally get a shiny Ralts during a Pokemon speedrunner's stream. Unfortunately it was only shiny for that first encounter, since all the other battles are "scripted"
Anyway as far as catching a shiney goes I've only ever seen one and IIRC* it was either a chansey or tauros in the safari zone which instantly split on its first turn, so yea that sucked.
*it was a while ago so all I remember is looking up the odds and finding out that i was one lucky mutha' fucka'.