Kurtwood Smith in real life is nothing like the common sense disciplinarian dad we all know and love. He is an Obamabot.
http://www.kenoshanews.com/news/dad_on_tvs_that_70s_show_stumps_for_obama_in_kenosha_441975341.html
Peter Weller, on the other hand, appeared regularly in documentaries for the History Channel about ancient history. He may or may not be a liberal, but he knows a lot about classical literature and history. So, that is one good thing about him.
He was a professor at Syracuse University.
He narrates the Engineering An Empire series on History channel. You can tell how much he is into the Renaissance.