Many people consider this a horror film
admittedly I'm not one of those people. But this movie still has some of the best CGI in it.
That was the first thing I thought of, and yeah, not technically horror.
It is interesting though, that a movie that's almost 20 years old has better looking CGI than movies that came out 6 months ago. Shows what can happen when you use technology as a creative tool rather than a replacement for the creative process. (Guillermo Del Toro seems to grasp this concept pretty well, so does Ridley Scott to some extent.) Which is part of why this question is so hard to answer. An effect, in and of itself, can't really "fix" a movie.