Get this: Julianna Margulies will appear on an NBC hospital show during November sweeps — but it's not ER! The Emmy-winning actress has signed on to do a two-episode arc on TV's funniest comedy Scrubs, sources tell TV Guide Online. Margulies will not, however, be playing a nurse. Rather, she'll portray a malpractice attorney. In other Scrubs news, Ed's Tom Cavanagh will reprise his role as J.D.'s (Zach Braff) bro in two episodes this October.