I also thought the one where she jerks while drinking the iced coffee just looked like a lame attempt at humor, as if a barrage of questions caused here to try to look everywhere at once. Now, I am not so sure. What if she did go into a seizure and was attempting an "I meant to do that" joke out of it? And WTF was the deal at the DNC when she looked like she was crowing like a rooster?
She definitely lost her train of thought in the clip in this thread. It was like a guy who is talking when some stunning-looking girl walks by and all he can say is "whoa".
The cold chai tea incident - if you look closely, her eyes flutter and then her eyebrows furl, as if she has a sense of loss of control, before she tries to simulate it the second time... I had a sister-in-law who suffered with myoclonus, and she would make that expression when experiencing a myoclonic jerk.