Deirdre Helen Lovejoy

Deirdre Lovejoy (born June 30, 1962) is an American actress.

Lovejoy is best known for her role on the HBO television series The Wire as Rhonda Pearlman. She graduated from the University of Evansville with an undergraduate degree in theatre, and New York University's Graduate Acting Program at the Tisch School of the Arts, with an MFA in Acting.

Lovejoy portrayed Nora Clark's disapproving mother in the 2006 dance film Step Up. She played the role of the serial kidnapper/murderer Heather Taffet (aka "The Gravedigger") on the American television series Bones. She also appeared in Bad Teacher as a student's mother, and had a recurring role on the Dana Delany series Body of Proof. Lovejoy will appear on Broadway with Tom Hanks in "Lonely Guy" by Nora Ephron.

http://en.wikipedia.org/wiki/Deirdre_Lovejoy