I went and saw it in Imax 3d.
Special Effects/3D
Everything was a little blurry, nothing was ever really in focus. The poor quality of the 3d and blurry/fuzzy images gave me a headache, and the glasses on my head made it worse. I've seen much better filming quality and realism on my 720p projector at home watching Planet Earth etc. I was very disappointed.
Screen/Audio
The screen is huge, but about the same size as my 120" projector screen at home given the seating distance from the screen etc. Proportionally it was about the same, but it's always cool see the big Imax screen. It just wasn't as special this time, as this is my first trip to imax after buying my screen. I thought the Audio was a little lacking. I had expected much better given it's Imax, and given the entire movie is "fake" and they can program whatever audio they want to come out of whatever speaker very easily. So the audio wasn't complex and engaging, and wasn't very loud/involving to suck you into the experience.
Plot
I thought the plot and story line was pretty stupid. Several points of the story are nothing more than to showcase the 3d, and just bored me.
Cost
It was $16 USD to see it at Imax. You can buy a DVD for less than that.
I should also mention I had a reflection off the back of my glasses from the ambient lighting in the room. The glasses also use Polarization to create the effect, and it caused issues for me.
Overall, I'd give the movie a 6.
