LATEST: WINGS star Tim Daly has been signed up to guest star in the forthcoming GREY'S ANATOMY spin-off pilot episode. The actor will appear alongside PRISON BREAK's Paul Adelstein, who has also been cast in the two-hour show which will centre around Kate Walsh's character DR ADDISON MONTGOMERY-SHEPHERD. Last month (FEB07), ABC confirmed plans for the new show, but declined to comment on the plot line and title of the spin-off. The pilot episode, penned by Grey's Anatomy creator Shonda Rhimes, is set to air in May (07).