who plays leonard's mother on big bang theory
Christine Baranski Baranski later appeared in the 2000–2001 sitcom Welcome to New York and, with John Laroquette, in the 2003–2004 NBC sitcom Happy Family. She co-starred with Bernadette Peters in a pilot for an ABC sitcom, Adopted, in 2005, which was not picked up. She also played Faith Clancy, the mother of Jim Clancy in Ghost Whisperer. Around the same time, Baranski began guest-starring in The Big Bang Theory as Dr. Beverly Hofstadter, a dispassionate psychiatrst and neuroscientist and mother of one of the protagonists, Leonard Hofstadter. She first appeared in the second season episode "The Maternal Capacitance", for which she received an Emmy nomination. Due to the popularity of her first appearance, Baranski returned in the third season for the Christmas episode "The Maternal Congruence", receiving another Emmy nomination. As of March 2017, she has appeared in nine more episodes.