I know my best is when i caught Giratina, full health, no status with a Great Ball in Platinum. My worst would be when i made i barely beat Iris in B2/W2 and I didnt save and my 3DS was on red and it shut off cause i forgot to save..
Official Moltres of the Pokemon X/Y Message Boards
Best: Beating my friend at a battle online. We used our best teams, and in the end, her Feraligator against my Whimsicott. She used Ice fang, and he held on by 3 HP, no Sash, and he devastated the Feraligator with a critical Giga Drain.
Worse: When I found out Gary was champion in the original Red version. I had no potions or revives after Lance, just a Blastoise with quarter health. All the saving and quitting in the world couldn't help me at that point.
Quoting the Topic Creator's original post is stupid and redundant. I'm here for intelligent arguments or flaming. It's your job to decipher which.