Courtney Thorne-Smith (born November 8, 1967) is an American actress. She is best known for her roles as Alison Parker on Melrose Place, Georgia Thomas on Ally McBeal, Cheryl in According to Jim, and her recurring role on Two and a Half Men as Lyndsey McElroy.
She was born in San Francisco, California, and grew up in Menlo Park, a suburb south of San Francisco. Her father, Walter Smith, was a computer market researcher and her mother was a therapist. They divorced when Courtney was seven years old, and she lived with both parents at different stages. She attended Menlo-Atherton High School, in Atherton, California, and graduated from Tamalpais High School, in Mill Valley, California, in 1985. She also performed with the Ensemble Theater Company in Mill Valley while attending high school.
Thorne-Smith made her first film appearance in the 1986 feature film drama Lucas alongside Winona Ryder, Corey Haim, and Charlie Sheen. She was also involved in a number of movies in the late 1980s, such as Welcome to 18 (1986), Summer School (1987), Revenge of the Nerds II: Nerds in Paradise (1987), and Side Out (1990). In 1998, she starred in the box office flop Chairman of the Board with Carrot Top. In 2009, she appeared in Sorority Wars.