I'm a bit of a political geek, so watching Adams et al debate the merits of independence in Part 2 gave me shivers. I'm sure that drama of that form turns off a great deal of people, but to me, a visual demonstration of how the creation of this country was not merely the beating of chests, guns and magic.
Despite it being a parody, I think that there is a decent amount of people in this country that think that Robot Chicken's "1776" is not far from the truth. Of course, this goes hand in hand with the knowledge that hardly anyone watches PBS because they can't tear themselves away from American Idol or Flavor of Love (I realize that this is on HBO and not PBS, but this serial is very similar to something PBS would produce, just with better actors).
Part 3 was a bit disappointing, but I suppose that's game for the course when it's the episode in the biopic where the subject was disappointed himself.