Poser is used in quite a few movies already, but not the entire thing. Perhaps P5 will be great enough to do it... Actually, I think if you had the time and resources, you could probably do it in 4..at least the characters, and the fact you can add bones to the figures would lend itself to that, I guess... The texturing available now sure rivals Final Fantay, except for maybe the hair. That Jet Li flick used Poser quite a bit in some scenes for layout purposes...couldn't you just keep on going?

Humankind has not woven the web of life. We are but one thread within it.
Whatever we do to the web, we do to ourselves. All things are bound together.
All things connect......Chief Seattle, 1854