Bonnie Blair Brown (born April 23, 1946) is an American theater, film, and television actress. She has had a number of high-profile roles, including a Tony Award-winning turn in the play Copenhagen on Broadway, as well as a run as the title character in the television comedy-drama The Days and Nights of Molly Dodd, which ran from 1987 to 1991. Brown is well known for her recent role as Nina Sharp in the television series Fringe, broadcast on Fox.