Very Large Array of very tiny dishes

If you saw the movie "Contact" then you've seen what's called the "Very Large Array". It's two rows of a few dozen large satellite dishes set at an angle from each other. The dishes work together as a radio telescope. I've been wondering if one could do something similar with a few hundred of the satellite dishes people used to have in their back yards or that TV stations have on the roof.

Looks like Direct TV has a similar idea.