Robert Clotworthy – Announcer
Robert Clotworthy guest-starred on the show for quite some time but mainly as a voice actor. The actor has done numerous voice acting in films, television series, and video games.
Besides, he is the narrator for Ancient Aliens, a History Channel series, and the voice of Jim Raynor in the popular video game StarCraft.
Joshua Malina – President Siebert
Joshua Malina has been an actor since 1992 and has acted in numerous films to include The West Wing as Will Bailey, Sports Night as Jeremy Goodwin, and Scandal as David Rosen.
He has been appearing as President Siebert on The Big Bang Theory since 2011 and has also appeared on Law & Order: Special Victims Units and Knights of Badassdom.