reference from studio ghibli movies: Nausicaa and howls moving castle.
monkey island, jak and daxter and some random art.
i particularly like the querky style of the monkey island stuff especially the environments. the edgy yet bendy environments portray mixed and warped perspectives but work perfectly with the genre.
the ghibli movies always have a fantastic art style and as such is very recognisable. and the random's are just there cos they look good.