I do love science fiction but it's not really a genre unto itself it always seems to merge with another genre. With the few movies I've done I've ended up playing with genre in some way or another so any genre that's made to mix with others is like candy to me. It allows you to use big mythic situations to talk about ordinary things.
One of the best animated films I've seen come out of Disney was the Tarzan movie. I wasn't crazy about the story or the design on Tarzan's face but the traditional animation was spectacular.