What character did Sarah Chalke play on the most watched television show in the United States from 1989 to 1990?
Sarah Chalke:  She is known for portraying Dr. Elliot Reid on the NBC/ABC comedy series "Scrubs", the second Rebecca "Becky" Conner on the ABC sitcom "Roseanne", Stella Zinman on the CBS sitcom "How I Met Your Mother", and Beth Smith on Adult Swim's adult animated science-fiction series "Rick and Morty".
i don't know