I really think that they should have shown the "Conflict" episodes in the stream. They deliver a very important message about peace, the danger of jumping to conclusions, and the necessity of skepticism (with Ladies Aberlin and Elaine), which still needs to be heard today.
I also liked hearing "What Do You Do with the Mad that You Feel?" sung not only by Rogers himself, but also by Keith the Handyman (played by Keith David). It was the same song that Rogers used to successfully convince Congress to give money to produce the show, so to hear it in the show itself was just awesome.