I'm surprised nobody has responded to this as of yet. I just bought a used Wii mostly for streaming videos and found out, like you, that while I can go to Amazon and can even buy things using the Wii I can't watch video content. Apparently Amazon doesn't stream through the Wii at this time. I contacted them and made the suggestion that they do so. Maybe if enough Wii owners politely suggest to Amazon that they add the Wii to the devices that can stream video from them they'll do something about it. Worth a shot at any rate.