Did McCain forget Michelle Obama's name?

A friend pointed this out to me as we were watching the debate, and I'm pretty sure it's true, and John McCain did forget Michell's first name.  Either that, or he refused to speak it (which would be excessively odd, even for him).

If I'm not mistaken, the first time he referenced her, he called her "Mrs. Obama", and the second time was something like "your wife" or "Sen. Obama's wife".  But both times it seemed like he couldn't recall her first name.