I couldn't be happier with this purchase. I've always been fairly inactive and now that I'm in my mid-40s, it's been starting to cause an overall lack of stamina and back pain and exhaustion from walking short distances (and I'm not even overweight). But after just 2 weeks of Wii Fit Plus (usually 30 -45 minutes per day), I'm really noticing a difference. I'm thrilled!
You can work up a sweat without even noticing because you're having so much fun. The Island Cycling is my favorite (love the Island View Course). It definitely gets your blood pumping. Some of my other favorites include Rhythm Kung Fu, Advanced Step, Hula Hoop, Obstacle Course, Rhythm Parade, Bull's Eye, Jogging and Boxing. There are so many choices that it's hard to imagine anyone not finding something that's fun for them or that suits their needs and goals (unless they're already in great shape).
Some of the activities can be a bit challenging to get the hang of (and it seems that different people have trouble with different things). I'm disastrous at skateboarding, but I'm a "calorie torcher" at obstacle course. My boyfriend's 12-year-old son got quickly frustrated with the obstacle course, but I bet he'd be a natural at skateboarding. You just have to find what works for you. Fortunately there are plenty of choices!
Another fun feature is that you feel like you're working out with your friends and family. As your family members add themselves to the program (and you can also add your pets), they are featured throughout the game. Your regular Wii friends are featured too, but not as prominently. They cheer you on at the finish line, demonstrate the moves, toss you your hula hoops, march in your band, etc., and your pet can run along side you as you cycle. It can be an added little boost to your workout. Wii Fit Plus also keeps track of your best times/scores, so it's fun to be able to challenge your previous records. It always feel great when you beat your previous best.
The yoga is good if you like a more calm, relaxed type of workout. Personally I have a hard time staying away from the more active games, but I'm glad it's there when I want to work on strength.