writes "On Tuesday, Toshiba launched the
Qosmio G55-802, the first laptop available with the Cell CPU. Yes, think PS3 technology, developed jointly by Toshiba, Sony, and IBM. However, in particular, the Cell CPU is not about gaming, but about the multimedia experience. Taking the load away from the Intel CPU, the Cell processor performs gesture control, face navigation, transcoding and upscaling to HD. Interestingly (and necessary, with 4 GB of RAM), the system comes with 64-bit Vista installed by default, but 32-bit Vista ships as an option as well."
However, semi-relatedly, if you'd prefer your Cells run open-source code, 1i1' blu3 writes "IBM's put up an open source project downloads page for the Cell processor — APIs, toolkits, IDEs, libraries, algorithms, etc. Most of the stuff on it right now is from SourceForge, but they are asking for user contributions to add to it."
(Terra Soft's also been providing a Cell-compatible Linux distro
for a while now, and according to Wikipedia the kernel's supported it since version 2.6.16.)