i go through phases of liking/playing one for ages then switching.
my 5 y/o girl though..... loves to sit on my knee with the nunchuck whilst i use the wiimote. then we go "baloon hunting" in island flyover. she shoots and looks around etc.... i fly.
funny thing is she loves sitting with me (but not playing- she shouts look out and points) when i play goldeneye. she likes for me to go through the levels and "save the girl daddy".