I purchased a nunchuck as I needed it for quite a few of my games. It is really useful and very simple to use - literally just needs to be inserted into the end of the wii remote. A great bonus is that the nunchuck runs off the wii remote battery - so no additional cost in batteries. I use my nunchuck quite a lot - so I keep it out with the wii remotes. I regularly use it for the rhythm boxing on wii fit. I also need to use it when playing Samba De Amigo. It is an extremely versatile wii accessory. I have to admit though that I do sometimes get frustrated with the nunchuck as it does not always get picked up - I do not know if maybe the sensor on this is not as strong as the one on the the wii remote. I would say it is a must have accessory for the wii.