And I'm completely unsure about this one. Grew up on it and thought it was great when I was seven years old, but Dunderklumpen! could perhaps be thrown in that other thread for worst animated films for all I know. I think I remember something of extraordinarily random, fairytale quality, but a very random adventure does not a classic make. (Perhaps a cult classic?)

By the way, the point of this thread is to either make some comment of suitable Dunderklump-ness or dredge up other obscure works from your childhood and see what's what.