S3, E11: J.D. decides to end his relationship with Danni, but doesn't know how, and Dr. Cox realizes that his power over the young doctors is dwindling -- Tara Reid and Christa Miller Lawrence Guest Star. - J.D. (Zach Braff) decides to break it off with Danni (guest star Tara Reid) because things are moving too fast, but he dreads the idea of having to do the deed. Ultimately, he is spared when Danni beats him to the punch by having Jordan (guest star Christa Miller Lawrence) break up with him for her. Meanwhile, Dr. Cox (John C. McGinley) discovers that parenting has unearthed his sensitive side and as a result, the residents don't fear him the way the used to, a situation Dr. Cox is more than happy to remedy. Elliot (Sarah Chalke) struggles to convince Dr. Kelso (Ken Jenkins) and her colleagues that her new look does not make her less of a professional. Donald Faison, Judy Reyes, and Neil Flynn also star.