Re: 7X03 A Town Called Mercy (Grading/Discussion) (SPOILERS!)
To everyone saying that the Ponds weren't important to the story, maybe I'm not remembering but didn't Amy serve as the Doctor's conscience making him remember his morality. I thought that was the most important scene in the episode and it featured Amy at least.
Thing is Amy wasn't really needed for that. That scene could have featured any companion and it would be the same. Hey, it could have carried more resonance with a former companion seeing the Doctor become this dark and uncaring.
"Internet message boards aren't as funny today as they were ten years ago. I've stopped reading new posts." -The Simpsons 20th anniversary special.