Sarah Louise Christine Chalke is a Canadian actress and model. She is known for portraying Elliot Reid on the NBC/ABC comedy series Scrubs, the second 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. She also had a recurring role on the third season of the ABC/TBS sitcom Cougar Town. She guest starred as Melanie Hertzal, a "special needs supermom" on ABC's Speechless, a recurring character who was at first the nemesis and then business partner of the DiMeo family matriarch. Most recently, she has done voice acting for the Netflix series Paradise PD and was a star cast member in Firefly Lane that premiered on Netflix in February 2021.