I'm here in Redmond this week and one of the cool things that I saw (that i can talk about) is the Windows XP Media Edition integration with the upcoming XBox 360 game console.
The Xbox 360 is a high definition Media Center extender that allows Media Center to be displayed on your Xbox 360. Hence, your Xbox can double as a Tive-type device as well with it. Of course, it means you have to have Media Center somewhere first. But that's what one would call "synergy".
The XBox 360 looks incredibly slick. It's "blade" menu is easy to navigate and with its synergy with Media Center it's likely to be a big hit.