I enjoyed Atlantis quite a bit as well. That aerial battle at the end was amazing. My main issue was just how predictable the angry military dude being the villain was. The first time I watched it I was like "come on Milo, you have to f***ing see this coming".
I'd actually rank it about as high as you did.
As for the hint...I'm gonna say Bolt since it wasn't really based off anything to my knowledge.
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"THIS is how you make Nintendo win another generation. Good job, Sony and Microsoft, you're idiots." - Vlado