If you're okay with the game's content, this game is a lot of fun, especially in groups. Anyone who's played the first game or Guitar Hero knows this. Rocking out to a song that everyone knows is a sublime experience, especially when it just "clicks" and everyone is playing well. 84 songs on the disc, 55 songs available from the first Rock Band disc, hundreds of downloadable songs, plus 20 free downloadable songs coming soon means that there's plenty of content from which you can choose. New songs every week means that there's pretty much something for everyone.
The new features and improvements, in addition to the songs, make HCG think that this is in fact worth their $60.