The Luckiest Moment...

[Furret162]

I was in Emerald's Battle Factory, and a Pinsir I had chosen had: Guillotine, Endure, Swords Dance, Flail. Of course, that isn't anything special. However, that 30 accuracy OHKO move hit 3 times out of 5 for 5 consecutive battles! (Certainly made it easier to get to Factory Head Noland.)

[Curtis talli]

finding a shiny zubat on Ruby then an hour later another one so I now have two shiny Crobats.

[Pingouin_7]

I won the lottery on Emerald once with a Lunatone I traded over from Sapphire.

[Plumpyfoof]

A little while back when me and my friends were starting to get back into Pokemon I had Emerald and he had LeafGreen. I'd beaten the E4 in Emerald and he hadn't (even after like 100 hours of gameplay) so I thought I'd do the friendly thing and offer to do it for him.

I'd forgotten just how bad at training Pokemon we were, he had many Pokemon in the 30's and low 40's that he carried in his party his only real asset was the level 61 Venusaur with 4 grass type attacking moves.
I think Vinewhip, Frenzy plant, Solarbeam and Razor Leaf or something to that effect.

I pulled out his untrained Articuno (nicknamed AAAAABBCDA) and took his other 4 highest level Pokemon to face the E4.

Soloed Lance with Articuno and all I had left was Venusaur with a decent chunk of HP and Articuno in the yellow. I had killed off the rest of my team while I healed Articuno and Venusaur. No more full restores left.

It was down to Venusaur and Charizard, for some completely unknown reason Venusaur was actually faster than Charizard and managed to get a Crit with Sludge Bomb that I taught it before the battles.
Hands down the most surprised moment in my gaming history, I applaud you Venusaur.