Here is a great deal on a charging station for your Wii controllers. This will elimate you need to buy TONS of batteries for your Wii remotes.
Right now you can get this Premium Dual Charging Station with LED Light For Nintendo Wii Remote Control for $7.00. Shipping is $2.99, so your total will be $9.99. Seems like a pretty great deal to me. Plus, your controllers will always be charged so no more running out of batteries in the middle of a game.