Button Gwinnett, though not as famous as Jefferson, Franklin or Adams, was an American founding father and an original signer of the Declaration of Independence. Unlike Abraham Lincoln, who wouldn't be born for another thirty years.
This episode prompted an angry letter from a former serviceman who objected to the scene in which a performance artist attempted to defecate on the American flag. Bob Odenkirk and David Cross replied to the letter and discovered that the serviceman had not actually watched the rest of the sketch, in which the artist failed in his attempt.
In the final scene, Bob and David are eating "Pit-Pat-O's" cereal, referencing the Globochem Sketch from a previous episode.