BTW, am I allowed to point out that going from a giant teddy bear that destroys the city to a nuclear reactor that is about to blow up is a bit of a tone shift (I believe that is the right word to use here.) and this happened in the first 2 episodes....I mean, for a kids show, only thing that could make it more dark is by having a character die.
Oh, wait that did actually happen (Yumi) though she got back to life in the same episode. (Though Yumi technically got cloned instead of revived.)
I actually kind of like how dark it could get for a kids show. I mean, I am not even talking about the plant incident(though that is a very minor thing) or the moment where Yumi got told that she has a disease that can't be cured and will kill her. Sure, she didn't die from it as it turned out to be a lie but some good time does pass where at least the characters don't know that and the show even shows Yumi dealing with knowing that she will die sooner rather then later.
And then season 5 comes along, makes the attacks of XANA the most boring thing ever and throws 2 in per episode. Because surely we want to see people getting hugged by specters 2 times per episode rather then seeing more of the crazy stuff like a giant teddy bear or the presence of nuclear meltdown. >_<