Actually, I've found great animation doesn't need to be complimented by great characters or even a great plot to be captivating. After all, this is a visual genre, and as much as Shinkai's writing is lacking, his art speaks to people on an almost subconscious emotional level. Don't get me wrong, a great story and a bunch of moving characters are also fantastic, but in Shinkai's case those things aren't really needed in the same way that MONSTER doesn't need great animation to hook us in.