|The Big Bang Theory Staff|
|Birthday||January 17, 1966|
|First Episode||The Benefactor Factor|
|All of the Big Bang Theory Staff|
JoshuaJoshua Charles Malina (born January 17, 1966) is an American film and stage actor, perhaps most famous for portraying White House Deputy Communications Director Will Bailey on the NBC drama series The West Wing.
He appears as Dr. Siebert, the newly-appointed president of the California Institute of Technology, in the episode "The Benefactor Factor" and is constantly iritated by Dr. Sheldon Cooper. His character has been referred to several times when Sheldon is bothering him about something he considers minor or irritating.