There was a recent posting to the Folding@home web site announcing the availability of a client for the Sony Playstation 3. This caught my eye as a potential embedded system early adopter of Grid. One could certainly argue about how "embedded" a hopped up game system with a cell processor is, but the point is not the size of the core, but the potential of what can be done with it.
While yet another search for the cure to a disease or extraterrestrial life is not all that compelling from a computer science standpoint, these types of projects do get play in the popular press and create interest in Grid.
Molecular simulations when the Playstation isn't serving media or playing games may very well lead to Grid enabled applications more closely associated with the Playstation's intended market. I still see media distribution and resource provisioning as a sweet spot for Grid.

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