A funny battle I had was last night in the Neon Colluseom.
It was the final person and the pokemon I got were:
Wormadam (I think)
what I first thought was: "oh crap, I'm gonna lose". But what turned out is, I actually beat both my Giratina AND Dialga with her Sunflora and Skiploom (solar beam/ Sunny day plus they abused their moves despite how good they were trained in EVs) It was pretty amazing to say the least. but they died to Honchkrow (who felly to Pappy, my Zapdos).