I hate that this series was cancelled. It had so much promise, and totally blew other series' of the time - "Invasion", "Surface", "The 4400", etc. - out of the water!
The basic premise is that an alien race, bent on taking over the Earth as its own, instead of invading, sends a 'signal' (as such) to bio-form the planet ready for habitation. It's clever, and original. An opportunity missed due to the basic requirements of standard American audience's.
There's a depth to the characters and, though the story is far-fetched, you can really get involved. Each episode leads nicely into the next. The dream sequences are visually stunning and lend a great deal to the story as a whole. It would be nice to think that, one day, someone capable of making a difference will recognise the mistake in cancelling this show.