Holy shit, it's almost nine years later and I'm only just remembering the game that took Newgrounds by storm. This is fucking gold. The dance moves are great. The background is great. The track selection is great. This has a certain spontaneity to it that makes one give props for creativity.
I'm a little disappointed that each background is meant to match a song, but only up until a point... After that, the backgrounds just seem out of place. If the backgrounds and songs were a 1:1 ratio it would have felt a lot more polished, just as it would have felt more polished to have the video shown on some kind of TV in the middle of the screen instead of gracelessly superimposing it over the background. (Another minor problem is that the camera seems to have changed positions for certain clips, interfering with smoothness, though this is fairly minor considering there are THIRTY-ONE clips. Holy shit.) I would have also liked some kind of motivation to play with it for longer. Suppose what you have now is a sandbox mode. What if there were a rhythm-based typing game that coincidentally triggered the dance moves as you played?