PlayTV is coming out for PS3 in Europe in the next 2 months. Although not announced for the USA yet, when its eventually released it might be compatible with your service. As you know you can add any FAT32 HDD to your PS3 or change the internal one.
The UK service is terrestrial only though, although we get 100 channels on it.
Sony might even start their own service in the USA to support the product, as unfortunately the USA has no standards. Hence why people can sell you proprietary boxes with set limits. Thats one reason I don't like USA TV, too many Tivo/Satellite and cable products and none of them work as well as British TV which is free and conforms to one standard.
Well thats the lesson of the day.
http://youtube.com/watch?v=zJQSAxqGCTU - If your interested. Very impressive indeed.

This industry has become 2 dimensional as it transcended into a 3D world.