An interesting concept, but it sounds like Toshiba has no idea what they've got, and are squandering it. They licensed the technology to decode video in laptops? ATI and nVidia integrated graphics chips already do that for 1/10th the cost and 1/10th the electrical power!
The article at Tom's mentions a desktop version, which is even more foolish, as anyone with an HTPC has already bought a Radeon 2400 or 3400 for a whopping $30 to do exactly the same thing. Since the Toshiba card doesn't even have a display connector, you need to already have a functioning video processor anyway.
This could have been useful, but honestly, what were they thinking?