Tim Daly is set to join the cast of Grey's Anatomy for a special two hour episode. Daly is also in talks to star in a spinoff of the popular show, If the shows spi off becomes finalized, Grey's co-star Kate Walsh who plays Dr. Addison Montgomery-Shephard, will most likely join that cast which may also include Taye Diggs. The special two hour episode of Grey's Anatomy will have Addison pondering taking a different position out of Seattle Grace, that would lead her to starring on the ABC spinoff.
