Right now at Nintendo.com if you've registered 3 games you can get 3 issues of Nintendo Power for free, and after that runs out you can get a 1 year subscription for $12 ($15 Cdn). You don't have to get the subscription after but it's cheaper than usual. And they'll add these 3 issues to an existing subcription if you already subscribe.

http://www.nintendo.com/e3_2005/