Martha Plimpton talks about her acting journey from "The Goonies" to "Hedda Gable", exploring her experience growing up in the theatre, with childhood performances at The Public; the importance of her joining Chicago's noted Steppenwolf ensemble, and the unique challenge of capturing her character with a single scene in the current Broadway production of Conor McPherson's "Shining City". Original air date - June 30, 2006.