I've been married for almost a decade and still sometimes have to put thought into it before I address my wife by name.

I once referred to my oldest friend - whom I've known since I was eight - as "what's-his-name." The woman who is now the aforementioned wife responded "you mean your oldest and dearest friend?"

Pretty much the only person whose name I can remember without trying is my kid, whose name I had a part in choosing.