If you watch the credits, Lucario and Aaron are walking towards the castle with chocolate. At least I think it was the castle. I can't remember, it's been a while.for me, the saddest episode was pikachu's goodbye. it just always mad me so sad to see it.
movie-wise, i used to say the first movie. Until I discovered my sadistic side. now I laugh my butt off and say "quick! Grab ash and we can use him as a nice statue for our garden." Now i'd say it's a tie between movie 5 (poor latios. Why did he have to die? *sniffle*) and movie 8 (Because lucario Died). I can't really say movie 10 because darkrai came back. And defnitely not movie nine, i was glad when it ended.
Bye Bye Butterfree was just stupid. Ash is just a big cry baby, he gets upset in almost every episode, the writers make a fool out of Ash Ketchum. I actually laughed when I saw Bye Bye Butterfree the first time, I actually pointed at the screen from the sofa and called Ash a crybaby. 0_0
Not every episode, though. Ash doesn't get upset EVERY episode