So, it's happened to all of us sometime or another. Perhaps against Mewtwo, having exhausted your supply of Ultra Balls, you just toss a normal PokeBall out of spite and it catches him. Perhaps you managed to, through a stroke of luck, you somehow caught Raikou your first shot before even weakening it, before it could flee.
My question is this: What is the absolute craziest successful catch you've had in D/P so far?
Mine is against Dialga. I was going for the stall/Timer Ball strategy. After fifty-odd turns, I was out of Ultra Balls, Poke Balls, and had about three Timer Balls left. It, on the other hand, was at about ten HP and being annoying. So out of spite, I tossed a Quick Ball... Which caught it. No effort. Just, fifty-turn quick ball, bam. It's in. (Well, it sort of makes sense that Timer Balls were completely ineffective and Quick Balls were godly... Dialga is the time god, after all.)