Welcome to Your Daily Nerd Thing where every weekday we bring you a different nerdy thing we found on the internet. We have known for some time that Lex Luthor would be coming to the Supergirl television show. We also knew that he would be played by Jon Cryer. And now we have our first teaser of what he will look like in the role. He has the smooth head Luthor is known for plus some facial hair.