Eternal Sunshine of the spotless mind is one of my favorite movies; I've seen it at least ten times and every time I do I manage to get a whole new outlook on almost all aspects of the movie.
The one thing that popped into my head when we saw it in class this time was how ironic the position of the doctor who ran the memory erasing program was. His entire profession seemed to be devoted to the idea that people, wanting to avoid pain, should be able to erase it from their lives. By doing this, however, he only seems to be creating more pain both for himself, his loved ones, and his patients.
A good example of this would have to be when his secretary is on the phone with a woman who had apparently had the memory erasing program happen several times, to the point where she keeps re-enacting the issues that she wants to forget. It comes down to the point that he seems to be living for causing pain to others. Even when what he is doing comes back and bites him in the ass, when he loses his wife and secretary, both of whom he has feelings for, he doesn't cease his work. It is like he accepts it and keeps living his life, like causing pain in everyone else would inevitably lead to pain within himself, something he does not seem to want to lose.
Overall, "Eternal Sunshine of the Spotless Mind" does a fantastic job of opening peoples' eyes up to different sources of pain in our lives, and how we might react to them.