ok, so i've met Mike Zintel from my Compact Framework days. he's cool, so i subscribe to his blog. well, todays post (A Market Within A Market (was .NET in HD)) has got me grinning from ear to ear. definitely read the last couple paragraphs. key points i took away were :

1) "demonstrate the feasibility of games written in managed code running on a .NET CLR on a final 360 dev kit."
2) "demonstrated the same game binary (almost the same; oh so close) running on the 360 kit, Windows and on Windows Mobile."

YEA! hope we hear more at the upcoming GDC. er, um ... anyone for NASAs WorldWind on the XBox 360 :)