Well, I'm obviously not the first person to notice a possible link between Ayn Rand and "The Incredibles". It was mentioned in this New York Times review of the movie "300", and when I ran a google search, I found dozens of references.

This review of "The Incredibles" at the TheObjectivistCenter.org does bring up an interesting point. Does the Syndrome chacter represent a slap at intellectualism? David Kelley writes that "In that one line, writer Brad Bird managed to equate murder and invention as acts of envy-driven hatred, and to elevate native physical abilities over the exercise of man's distinctive ability to think, create, and magnify his powers through technology. The latter is an especially bizarre statement for the wizards at Pixar to make."

Potluck.com has an excellent overview of the relationship between Ayn Rand and "The Incredibles" and even sheds some light on Ayn Rand and "The Fountainhead".

Here's the Emerson quote that made me think that perhaps the link between Emerson, Thoreau and Rand might be worth investigating more:

"Trust thyself: every heart vibrates to that iron string. Accept the place the divine providence has found for you, the society of your contemporaries, the connection of events. Great men have always done so, and confided themselves childlike to the genius of their age, betraying their perception that the absolutely trustworthy was seated at their heart, working through their hands, predominating in all their being." (from "Self-Reliance" by Ralph Waldo Emerson)