Windows 8 app designs
thenextweb.com
thenextweb.com
That is to say that every app does its own thing as far as the design is concerned. Excluding the lack of 3D decorations and skeumorphisms, there's little consistency in their look and feel. Not necessarily a bad thing, but that's a new push in a direction of one-design-per-app for a desktop OS.
I hope a lot of other developers use it as inspiration for what is possible with the Metro UI, too many apps follow the same cookie cutter templates with no real thought behind them.
Also, I quite like pinning things like twitter or IM into a Metro sidebar/split next to my desktop. If I have multiple monitors connected, I even fill the second monitor with Metro apps, for example a browser for documentation.
But despite all that, my main work space is still the desktop and it is quite hard to get real work done in a Metro-only environment. (Disclaimer: I am a programmer)
Good on Microsoft to make these templates to help developers get started, but the new and fresh of WANM (Windows Application Not-Metro) is quickly starting to look like tired PowerPoint and Front Page templates.
I'm going to start calling it WANuM Style. I can hear the theme music already.
I think it might have something to do with a lot of empty screen real estate for some of these apps.
I've actually been surprised how often I am using "apps" rather than the web version on a full blown Win8 box that does NOT have touch.
When more stuff like HBO, Showtimes, etc are available I would definitely see the Metro thing replacing my HTPC setup. Add Kinect support Microsoft!