When was the last time you heard something like this?
Was it, maybe, this?
The only other analogy I can come up with was back in my radio days. This was before digital editing, so we physically sliced tape with razor blades. One time we picked up all the inarticulate pauses and verbal tics, the ones that save precious seconds from the sound bite, and spliced them together into a farrago of stammers and words vaguely related to the question at hand.
But Palin saves us the time and does it for us without the editing.
For the record: Chuck Grassley says "um" a lot and Tom Harkin uses the words "quite frankly." You notice stuff like that when it's 3 AM and you're on deadline for Morning Edition and rocking reels of tape back and forth.