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Sara Gilbert stars as Leslie Winkle, a physicist that works at the same Caltech lab as Leonard.  She has had an on-and-off again relationship with Leonard and is bitter enemies with Sheldon.

By Carissa Pavlica

By the end of February The Big Bang Theory will have 200 episodes under its belt. It’s time you know where you fit in the TBBT universe. Find out now!

By TV Fanatic Staff

According to Ausiello Files, Sara Gilbert has been demoted from a series regular to just the occasional guest star on The Big Bang Theory.

TV Fanatic