MSNBC's Olbermann calls Bill O'Reilly a "Racist Clown"

In his "Worst Persons" segment, Keith Olbermann is in rare form - the rare form being making fun of Bill O'Reilly, which he vowed not to do since June 1. In fact, tonight's edition is "brought to you by Fixed News: Celebrating six days without having fired Glenn Beck, even though he called President Obama a racist."