<Tr> <Td> 1988--97, 2018 </Td> <Td> Roseanne </Td> <Td> Jackie Harris </Td> <Td> 228 episodes </Td> </Tr> <Tr> <Td> 1988 </Td> <Td> Saturday Night Live </Td> <Td> "Laurie Has A Story" </Td> <Td> Episode: "Matthew Broderick / The Sugarcubes" </Td> </Tr> <Tr> <Td> 1995--96 </Td> <Td> Duckman </Td> <Td> Various </Td> <Td> Voice role Episodes: "Research and Destroy" and "Forbidden Fruit" </Td> </Tr> <Tr> <Td> 1997 </Td> <Td> King of the Hill </Td> <Td> Cissy Cobb </Td> <Td> Voice role Episode: "Peggy the Boggle Champ" </Td> </Tr>

Who plays sheldon cooper's mother on the big bang theory