Finneran is perhaps best known for her role of Sharon Tyler on the critically acclaimed, short-lived Fox television series "Wonderfalls". She was also featured as a part of the cast on the Fox show "The Inside", in the short-lived CBS sitcom "Bram & Alice", and in many guest roles in shows like "Frasier", "Sex and the City" and "Oz". In 2007 Finneran was featured in the new series "Drive". She played the sister of the main character, Alex Tully (Nathan Fillion).