To mark Brady matriarch Florence Henderson's 80th birthday, nearly all of the surviving cast members of "The Brady Bunch" will reunite Thursday on "The Talk." (Christopher Knight, Mike Lookinland, Susan Olsen and Barry Williams will be on hand, while Ann B. Davis and Eve Plumb will deliver taped messages. Maureen McCormick seems to be pulling a Jan!) I'm a full-blown fan, so don't think I can miss this one. Will you be watching?