<P> Charles became an actress, and was best known for her role as Charlene "Cha Cha" DiGregorio in the 1978 feature film Grease . She made several appearances on television as well . </P> <P> Charles later became a speech professor at California State University, Northridge . </P> <Ul> <Li> 1987: Magnum, P.I. (TV series) Maria Torres </Li> <Li> 1985: Latino Marlena (as Annette Cardona) </Li> <Li> 1981: Musical Comedy Tonight II (TV movie) </Li> <Li> 1980: The Incredible Hulk (TV series) Rita Montoya </Li> <Li> 1979: Can You Hear the Laughter? The Story of Freddie Prinze (TV movie) Billy </Li> <Li> 1979: In Search of Historic Jesus (documentary) Mary Magdalene </Li> <Li> 1978: Centennial (TV mini-series) Senora Alvarez </Li> <Li> 1978: Grease Cha Cha DiGregorio </Li> <Li> 1977: Man from Atlantis (TV series) Ginny Mendoza (as Annette Courset) </Li> <Li> 1976: The Bionic Woman (TV series) Elora / Emerald (1976--1977) </Li> <Li> 1974: Barnaby Jones (TV series) Angela / Lucy Stahl (1974--1977) </Li> <Li> 1972: Emergency! (TV series) Mrs. Harrow / Wife (1972--1974) </Li> <Li> 1972: Banacek (TV series) Cecelia Gomez (as Annette Cardona) </Li> <Li> 1972: Bonanza (TV series) Carmen </Li> <Li> 1972: The Mod Squad (TV series) Cory (as Annette Cardona) </Li> <Li> 1970: Gunsmoke (TV series) Rita (as Annette Cardona) </Li> <Li> 1970: The Flying Nun (TV series) Louisa (as Annette Cardona) </Li> <Li> 1968: The High Chaparral (TV series) Jill </Li> </Ul> <Li> 1987: Magnum, P.I. (TV series) Maria Torres </Li>

How old was the actress who played cha cha in grease