If The Tourist had been half as bad-ass as the other Jolie actioner Salt, it would have been a much, much better movie.
Being an adult, I have not seen the previous two Step Up films. I do, however, watch So You Think You Can Dance, Dancing with the Stars and Dance Your Ass Off, so I'm basically a professor of dance by this point, and I can tell you that the dancing in Step Up: 3D is as entertaining as it is three-dimensional. So, a lot, on both counts. I'm not sure why the rest of it bothers, but obviously this movie wasn't exactly trying to revolutionize the genre.