I have to say that I am a fan of the series. The dancing in the first movie was great, but the subsequent films has had amazing numbers. I could see why Chu would want to do the film in 3D. 3D is the "it" thing these days, and the dance sequences were enhanced by the technology. That being said, 90% of the film didn't require 3D. I hate wearing the glasses unless I'm on a ride at Disney. I feel like a lot of the films that employ 3D technology also release a 2D version (a good thing for people like me). I wish Step Up 3D would have given the option, even if the name denotes the extra dimension. As for the cast, I was disappointed in the male lead but not because of his acting or looks. He is beautiful and can act. However, he apparently can't dance. I felt like if he was going to stand on the sidelines during battles or have obvious doubles they could have played him even heavier as the "director". Moose and Camille pulled off what could have been an impossibility: tying the first and second film together with the third in a realistic manner. Unlike Channing Tatum's cameo to tie the first and second films together, making Moose and Camille besties going to college together was brilliant. The soundtrack is great (even though some of the songs you'll recognized from other recent shows: Glee and Sex and the City). All in all, I enjoyed the movie and left the theater wanting to dance. The film (like any self- respecting franchise) leaves it wide open for a fourth. A word of advice: make like The Fast and the Furious and wait 'til you're missed and can get the entire cast together to go for #4.
