For me it would be Princess Mononoke, which is also one of my favorite films, period. I really appreciate the maturity and nuance it brings to it's environmental themes, which have been done in many other films, but not as well.
My Neighbour Totoro. It's so serene and peaceful. I used to watch it all the time here since we had it in VHS, it's beyond nostalgic for me. Also that soundtrack is gorgeous, I doubt I'll ever be able to forget it.
Language is English but Japanese titles and short comments eg. “かわいい!” are allowed. This is because my Japanese is shit and thus I cannot moderate it effectively.
My Neighbour Totoro. It's so serene and peaceful. I used to watch it all the time here since we had it in VHS, it's beyond nostalgic for me. Also that soundtrack is gorgeous, I doubt I'll ever be able to forget it.