runner66, allow me to clarify my statement as well.
My statement holds true that CWACOM is the only 3D BRD available for purchase from stores without a bundle. Ice Age and Coraline were both bundle products, and probably the rarest 3D BRD's ever. Just check their prices on ebay if you don't believe me.
As I said before, you can check the 3D Blu-Ray topic that is at the top of this forum. Here's the link http://www.avsforum.com/avs-vb/showthread.php?t=1235684. That should contain all the info you're looking for. Grand Canyon: River at Risk is not available in the US currently, but has a (supposed) release date sometime in October.
If you're asking for what people's personal opinions are of 3D Blu-Rays they have personally seen, then that's a different topic from what you asked. I have only seen MvA and CWACOM, but I've also seen clips from several other upcoming films in 3D. I will agree that Grand Canyon was one of the most impressive I've seen, but I don't want to order the disc from Germany when its US release is right around the corner.