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Her career took off when she appeared as a cheerful "Happy Hotpoint" elf in television commercials during the 1950s. However, her big break came in 1961 when she was cast as Laura Petri on The Dick Van Dyke Show. Her portrayal of the charming wife to Rob Petrie endeared her to audiences and quickly made her a household name. Despite initial reservations from the show's creator, Carl Reiner, a successful audition convinced him that Moore was the right choice, and the show became a critical and commercial success.