answers: Lea Thompson
context: In 1979, she appeared in "Real Life". In the 1980s, she was cast in several major films, usually playing the mother of a main character. In 1984, she co-starred in the film "Gremlins" as Lynn Peltzer, the mother of main character, Billy Peltzer. Also that year, she played Ethel McCormack, mother to Kevin Bacon's character, in "Footloose". In 1985 she appeared in the film "Back to the Future" as Stella Baines, the mother to the character played by Lea Thompson. In 1986, she played Mrs. Lachance, the mother of Gordie Lachance (Wil Wheaton), in the drama film "Stand by Me". </s> enough to bully Stoltz. Cohen was recast as Skinhead, one of Biff's cohorts. Had Fox been cast from the beginning, Cohen probably would have won the part because he was sufficiently taller than Fox. Melora Hardin was originally cast in the role of Marty's girlfriend Jennifer, but was let go after Stoltz was dismissed, with the explanation that the actress was now too tall to be playing against Fox. Hardin was dismissed before she had a chance to shoot a single scene and was replaced with Claudia Wells. Actress Jill Schoelen had also been considered to play Marty's girlfriend. Following </s> had been cast, but a pilot she had done for ABC had been picked up, and she was contractually forced to drop out of "Back to the Future". During that time, Eric Stoltz had been shooting for five weeks in the role of Marty McFly. Melora Hardin was slated for the role of Jennifer, though she never actually filmed any scenes. The producers halted filming and replaced Stoltz with Michael J. Fox. By then, Wells' pilot had been finished and she was recast as Jennifer, now shooting alongside Fox, never having filmed a frame with Stoltz. That same year (1985),
question: who played lorraine in back to the future