When I'm watching a movie that goes so far with the 3D gimmick as to mention it in its title, I expect a certain amount of ridiculousness for the sake of optical depth: stuff flying at the camera, some deep holes, or anything else that makes you acutely aware of your binocular vision. What I don't expect is a sink drain POV giving me the full experience of Brendan Fraser's gargled spit. It's a rare film moment--commonplace in the Saw series--that's equal parts stupid and disgusting.
But that somehow isn't the worst part. That comes at the point in the trailer pictured above. Is this the laziest, most blatant attempt at depth ever, or is Fraser's face covered by the book simply to mask his eye rolling? That would make sense, except that he was also in multiple Mummy movies, and manages to deliver "Ladies and gentlemen, I give you the center of the earth" with a straight face, so I'm tempted to say it's just lazy. Then again, with a family film so daringly post-modern as to acknowledge its own source material (Fraser's character proves the Verne novel to be fact-based), it's not so crazy to think this is another meta-wink at the audience, letting us know that the characters are acutely aware of the third dimension. I'm not sure if this is really stupid or borderline brilliant.