Defiance. I think it's just awful. They're supposed to have all these different aliens, but they all look human--just different colors of makeup. They should have eel people. Add a mediocre story and you've got something about as exciting as watching moss grow.
The Dome. It hasn't started yet, but I hate it anyway. The Simpsons already did this. There was already a dome placed over Springfield. If the best you can do is rip off The Simpsons, just pack it in. I think this is really going to blow.
Primeval. The British version got really bizarre. I don't know what this new one is going to do. One thing I liked about the British one was the subtle time change differences and pets and people changed slightly. So far they just coax the creatures back to their own time. I don't like it very much. They're going to have to start trying to stop the anomalies.