who plays leonard's mother on the big bang theory
Christine Baranski In 2009 Baranski began guest-starring in The Big Bang Theory as Dr. Beverly Hofstadter, a dispassionate psychiatrist 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 July 2018, she has appeared in eleven more episodes.