This one is a few days old now, but it's worth an entry. Meredith Vieira, who was on NBC talking about Betty Fox, speculated that as mother of "Michael Fox…who suffered from cancer, he started that marathon of hope" she might actually be the person who would light the Olympic cauldron.
I can almost accept the slip of the tongue, but the kicker is when NBC throws up a picture of Michael J. Fox to ensure Americans know exactly who Meredith Vieira is talking about.