I don't mind Rush. Over-the-top right winger so I take him with a grain of salt.
No different than the over-the-top lefties like Olbermann or Maher or people like that. They get so angry that they are literally spitting into the camera.
As for the Michael J. Fox thing. I believe the issue was not his terrible disease or his defending stem cell research it was that he deliberately went off his medications before his testimony so that his symptoms would be worse. That's what I recall anyway.
Peace!