Guest stars can be good and guest stars can be not-so-good, but this one sounds like a winner to me. EW's Michael Ausiello has an exclusive report that Florence Henderson will be on Samantha Who?

And if you think Christina Applegate kind of looks like she could be related to Florence, you're not alone. The Brady Bunch veteran has been cast as Samantha Newly's grandmother, Jean Smart's mama. And if that's not blonde goodness and potential hilarity for you, TVGuide.com has another exclusive; Christine Ebersole will play Sammy's aunt. In the very same storyline!

Jessica Sierra is being stalked by a 59-year-old man who says he fell in love with her when he saw her on American Idol last season. While she was on the show, he sent her jewelry and flowers. Tampa, Florida police say Paul Young left Sierra more than 40 voicemails in the last few months, telling her he loved her and he would go to jail for her. What an odd thing to say. When he showed up at the home of her grandmother recently, he was arrested. Young is currently in a Tampa jail, being held without bail.