The Atlantic Monthly had a good article on the two candidate's debate styles:
http://www.theatlantic.com/doc/prem/200407/fallowsFallows does a good job in pointint out how Bush's team has long feared Bush's facial expressions in debates and how Kerry comes across as patrician without a partician upbringing compared to Bush coming across as folksy with a partician upbringing.
Anyway...the interesting thing is this letter from a doctor in response to Fallow's article:
It points out that Bush's increasingly worse public performances could be signs of some health problems. Odd, I know, but I recall thinking this of DC's council chairman when I met with him a few times (he was a smart guy but seemed increasingly disorganized and abrupt) and turns out it he had a brain tumor. So, pajama crowd theory for the day (tongue firmly planted in cheek): is W's speech problem (like my typing problems!) indicitive of something else? ;-)