A health policy expert who Keith Olbermann eviscerated during Thursday's "Countdown" has officially challenged the disgraceful MSNBC personality to a debate concerning provisions in the soon to be enacted stimulus plan that will negatively impact healthcare in this nation. In a press release issued Friday, Betsy McCaughey stated (h/t TVNewser): If Keith Olbermann of MSNBC could defend the health provisions slipped into the stimulus bill on their merits, he wouldn't be resorting to personal attacks on me. Olbermann calls me a shill funded by the drug industry (2-12-2009). That's not true...If Keith Olbermann has the courage, I invite him to...