I just listened to it again.
Guys, tyrants are not necessary evil guys. They formed an important part of the Greek history, and most of the time they were very important for the progress of civilization. We see them as evil today because they violently take power from those who had it before. Today we have mostly democratic governments, but ancient Greece was not purely democratic, it was actually closer to an aristocracy with elections. The problem of this system was that the archons would not pass laws in favor of the lower social classes because they were afraid of losing their position in the next election (as they still are today
). The tyrants, in contrast to the normal archons, did not have to fear elections, so they were free to pass laws that would improve the position of the lower social classes (and also eventually allow them to vote and participate in the government). Many Greek tyrants were very popular and respected. Most of the time those did a better job than the elected archons, just look up Peisistratos.