Fox Responds To Limbaugh's Accusations (CBS News) Responding to criticism by conservative pundit Rush Limbaugh, actor Michael J. Fox defended his appearance in a political campaign ad, saying he wasn't acting or off his medication. In fact, at the time he was over-medicated for his Parkinson's disease, Fox said in an exclusive interview with CBS Evening News anchor Katie Couric. "The irony is that I was too medicated, I was dyskinesic," Fox told Couric. "Because the thing about, the thing about being symptomatic is that it's not comfortable. No one wants to be symptomatic; it's like being hit with a...