We covered Prince's foray into the wonderful world of Wii last week, with their racquet attachment for the Wii controller. On a similar note, we came across the Wii Sports Pack, which includes baseball bat, tennis racket and golf club attachments. It also comes with a handle that adds size and allows you to grip with both hands.
According to GamingBits:
On the top of each of the accessories is what ezGear calls an "IR Window." It's basically a transparent piece of plastic that allows you to still use the Wii Remote pointing functionality when navigating game menus. It's a good idea, but unfortunately it didn't work with the tennis racket and the golf club. Even using the baseball bat attachment, which has the largest IR Window, pointing with the Wii Remote was shaky and too much of a pain to use in the menus. You're better off removing the top attachment to use the Wii Remote in menus. You'll want to switch the accessories between sports games anyway.