The biggest day in gaming was July 15, 1983 when Nintendo launched the Famicom. That is what eventually revived the industry after the video game crash of 1983. A lot of you weren't even born yet so you wouldn't really understand the impact of said console or how the international versions, the Nintendo Entertainment System (NES) for example, were well received. But that is what brought home console gaming back from the brink and should be recognized for what it was.
Inspite of what the MS hype machine may have you believe the Kinect is just an add in a currently thriving gaming industry. Still, I hope it will do well and push gaming to greater limits.