" Is this actually on the source or is it something wrong with the way I’m displaying it through my PS3 / HDTV?"

I don’t come close to actually understanding the technical side of this stuff, but from what I do understand, there is something (a codec?) which is used when creating the DVD master. Whatever this is, a codec, an algorithm, the point is that it is designed specifically for live action. In order to properly transfer animation, they have to use a different one. The reason so much animation is transferred badly is that the companies don’t remember to do this, they just use the default which is meant for live-action and known to cause issues with animation.

(Hopefully this strikes a chord with somebody who actually does understand this stuff and can explain it for us dummies.)