PaRappa the Rapper 2 is a cute and addictive game, that anyone that likes rhythm games will like. It lacks length though
The games songs might be silly, but are very enjoyable, as well as the characters. PaRappa being a dog, and Mr Onion being, well, an Onion with legs and arms. The graphics stick close to the original, but still doesn't look as good as Dance Dance games.
However, the length of the game does put you off big time. There is only around 8 levels, which don't last too long. You could average the entire game in about 4 hours, on all difficulties. The silly songs though do make this a worthwhile title to get.
Overall, anyone new to the PaRappa the Rapper franchise will like. If your new to the rhythm/msuic genre, rent this first.