I didn't see the actual Letterman show last week when he made that comment about the Palin girl, but my first thought was that it was about the oldest daughter, not the 14 year old. And they do look enough alike that I can see where someone thought it was the oldest one there, not the middle one.
SP should just move on already. She is dragging this out. Letterman gave an apology, invited both Sarah and Todd on his show. Now I am reading how Todd put on his Facebook page that Letterman said A-Rod "raped" rather than "knocked up" BIG difference! Now there are people calling for Letterman to be fired???? Please. He realizes that the joke was in poor taste. Let's put it all to rest.
As for today's show, I have not seen it yet. But as far as Heidi spraying her hair spray all over, I think Whoopi is very allergic to perfumes, etc. and I can see where hair spray could really do her in. I think one time Joy had a new perfume and she wanted to spray it around and Whoopi told her not to, due to allergies IIRC.
I only know of Heidi and Spencer from the times they've been made fun of on the Soup show. And what little (or much) I have seen on the "I'm a celebrity" show.