A large part of Penn and Teller's Las Vegas show is using magic to communicate their Libertarian ideals. Their accessibility is an important part of their message.
Your enjoyment of their performance might have a lot to do with whether or not you agree with their point-of-view.
I would be very surprised if they didn't greet the audience after the show.
ARTc3 formerly ARTc. Actually been a poster since 2004. My name isn't Art. Drop the "3" and say the signature and you'll understand.