There are many different Hannah Montana games/toys flooding the market, and according to my 7-year old daughter, the Hannah Montana Dance Mat is one of the better ones.
It is a dance mat that connects to the TV, and your child performs dance steps upon the appropriate boxes on the mat that correspond to the ones that are being demonstrated on the TV screen. There are 4 of Hannah's hit songs included in this game for the kid's to learn to sing and dance to.
Also included is a long blonde wig and a working headphone/microphone, to complete the impersonation.
What I like about this besides the non-violence or lack of greed-based theme that is all too rare in video games today, is the fact that my child gets plenty of excercise, as well as co-ordination and physical dexterity practice. And of course she just loves dressing up and dancing and singing. This is a wonderful, wholesome toy that I recommend to any parent.
The only negative is that I wish there were more than just 4 songs included, but my daughter doesn't seem to mind. This is rated for ages 5 and up, and is available at most department stores.