Who is Paul Reiser’s  mother-in-law on the show Mad About You?
Cynthia Harris Cynthia Harris (born August 9, 1934) is an American film and television actress. She is best known for her role as Sylvia Buchman, Jamie Buchman's overbearing mother-in-law on "Mad About You".
Mrs. Grouch Mrs. Grouch is the mother of Oscar the Grouch in the long-running American children's television series "Sesame Street" (1969–).