I hate to be a last minute sticky wicket, but aren't all the choices of your movie sets all rather unified under the kiddy shows genre. Although some really dynamic scenery is generously available in most these suggested movies, still their subject matter is somewhat (in my opinion) rather trite and generally unrelated to any real scientific,political or geologic reality.
Perhaps you could let the general audience here have a choice of some more adult/contemporay movie themes. Movie themes that deal with current world problems such as islamic jihad, depletion of economic resources, and even such serious fodder as political oppression and rape in Darfur. Admittadly these reality based movies are not the subjects for pleasant nappy times, but many people and movies tend toward a creative effort/work that can possibly solve som real life problems.
I like many of the movies that you list, and would agree that their landscapes are to say the least very dramatic and impressively CG augmented, and usually the geopgraphy/space is beautifully illustrated on an epic scale. Given all this I would still like to see some additions that are perhaps historically/politically themed such as Apochalypto, 10,000 BC, Bordertown, and Troy to name a few. Just a thought, and I do hope I haven't dribbled down anybody's leg with this suggetion.