Best and Worst Moments in 5th Gen

So, here you can share those moments in Black & White and Black 2 & White 2 where they made you go "Woohoo!" with a victory dance, or made you mad and wanting to throw your DS at the wall.

The good moments can range from things like beating a champion, catching a rare Pokemon, encountering a Shiny, winning tough battles etc. while the bad moments can be like losing to someone at the last moment, losing an important Pokemon and the whatnot.

Discuss!

Note: Posts here must be for B/W or B2/W2 only. I'm serious.