If by laptop you mean "non-netbook", then...not that I'm aware of. If you allow tablet/netbook sorts of things, there's the Touch Book, from the (in my opinion) goofily-named Always Innovating, which looks pretty neat to me: http://www.alwaysinnovating.com/touchbook/

A quick google suggests there are others as well: http://www.slashgear.com/wistron-n900z-smartbook-sub-200-arm...

Something similar to the beagle board: http://www.globalscaletechnologies.com/c-2-globalscale-techn... or http://www.igep-platform.com/index.php?option=com_content...

I hope there will be something nettop like with tegra 2 / omap4 / nec's new platform in the near future, I'm looking for something like that as a replacement of my current desktop. Also boxee 2 might be interesting...

The BeagleBoard (http://beagleboard.org/) may count as desktop. It's a tiny board with a 600 MHz Omap3 with 256MB RAM and the ability to play HD-Video. Power consumption is less than 3 Watt.

I own one and it's fun to play with, although the display resolution is limited to 720p (maybe even 1280x1024) and a standard Linux desktop is pretty slow on it - Angstrom is better.