I posted this link http://www.betterchinese.com/ a few months ago for Chinese learning resources. I also said I would share my comment about the DVD I bought from the website.
And you know what, I just found out that you can now view those videos on that website for free after you registered. ><
You can actually take the lessons online too. I think this is great! My son likes it and thinks it's more fun than going to Chinese school every weekend.
They have both simplified and traditional Chinese versions. Now I'm leaning towards teaching my son simplified as I think it'll be the trend. But I think it doesn't really matter, just pick one system and let your child learn it.