[TJSomething]

A lot of the dancing stuff is about the ability to spin the camera around a moving subject to the music, which is quite difficult otherwise.

There's a lot of impressive work in 3D animation that looks quite good. Outside of Bandai Namco's work on idol anime, Studio Orange has made some of the best looking 3D modeled anime lately and a few other studios have been getting into it. I'm more familiar with video game animation, where Arcsys Works has made great strides too, by using animation on threes, manual tweening, stretch and squish bones, and carefully UV mapped textures for crisp color boundaries.