Saw eternal sunshine for ... last night. Interesting construct but quite a simple idea about the triumph of love. Funny in parts, touching in others overall a good watch. Kristin Dunst really has a magical presence she stands out even in such small roles.
One interesting movie to watch about memories is After Life a Japanese movie in which the situation is the exact inverse and the dead are supposed to choose one memory to hold on for eternity.
Don't think I would ever want to erase memories - however much they may hurt. Anyways what is a memory ? Is it an accurate reflection of what we have experienced or a suitably modified & edited remembrance of the past which fits our image of ourselves today.