This is my favorite of the 3 Karaoke Revolutions so far. Mostly because it has more songs that I can sing on it. It also polished up some things from the first one, and added a few nice features.
All of the games are good for hanging out or partying with a group of friends. You can put people on different grading levels, so that the people with less talent are graded easier than that guy who spent 6 years in choir.
If you like karaoke in bars, and want to do it yourself at home without a lot of expensive equipment, this game is where it's at.