Xbox Live Gold members in the U.S. can now download the Twitch app for Xbox 360 to catch the top 300 live channels directly on the console. I don't know that anyone was expecting this to let you actually stream games, but to be absolutely clear, it won't. Should still be a popular one, regardless.
While I knew Twitch had become substantial, hearing that the platform pulls in 34 million monthly unique viewers had me doing a double take. I'm surprised it took this long for the Xbox partnership to happen; the two seem perfect for one another.