I've never "finished" a Dance Central game because, every time I start playing, the booze eventually runs out, and/or people eventually go home. I could play it sober, by myself, but, um, no.
That might have to change soon, though, because Dance Central 3's closing credits are wonderful. Not only are they a great pixel representation of the series' characters, but the animation wasn't done by the developers. It was doneby fan David Nguyen, a "Dance Central cosplayer and community member".
David goes into detail about Harmonix's cute gesture, as well as how he made the video, in this guest post over on Destructoid.
Dance Central 3 goes 16-bit for its end credits [Destructoid]