If you've got a Wii, you can put it to far more valuable use than throwing bowling balls and jumping around with a fake tennis racket.
You could also use the console to receive data, including photos, music and movie streams from your Mac that you can browse, listen and watch on your TV. This is really useful if you've got a huge amount of multimedia data stored on your hard drive and can't be bothered constantly burning it all to DVD to watch on TV via a DVD player. Simply use Wii Transfer to send the data directly to your Wii.
Using Wii Transfer couldn't be simpler. Firstly you'll need to make sure that you've got the Wii Internet Channel installed on your Wii. Fortunately, Nintendo have seen sense and stopped charging $10 for it. The browser is now available for free to anyone (just go to 'Wii Shopping' on the main menu to download it). When you start Wii transfer, you'll be given an IP address to enter into your Wii browser. Type it in (and I recommend saving it to your favorites so you don't have to keep re-entering it every time you want to stream data) and you'll immediately be presented with a menu for Pictures, Movies and Music.
Wii Transfer is automatically integrated into iPhoto and iTunes so your pictures and music will instantly be available. To stream films however, you'll need to drag and drop them into the Wii Transfer interface. This is the slightly annoying bit as you have to wait for Wii Transfer to convert your video file into something it can read. If you're hoping to stream a full DivX movie for example, this could take some time. Once converted though, your films are ready for watching on your TV.
Wii Transfer is easy enough for even the most non-tech savvy Wii and Mac user to master. So, if you're looking for a simple way to stream data from your Mac to your Wii, look no further.