Like Rock'N'Roll? Up for a challenge? Need an ego boost? This is for you.
The most appealing thing about this game to me, is the amount of replay value you get out of it. With over 70 songs to play across 4 difficulty levels ranging from 'anyone can' easy to 'that guy that invested his life in this game can' expert*, it will take a long time for you to get over the songs. And let's face it, there are a lot of great songs in the line up.
If you're a music fan, I'd really recommend this one. A must have for the Wii.
*Note that I've rated this 'Just Right' because it is as hard as it needs to be where it needs to be.... I think.