Ah, Shonda. How you tease us. Apparently, Grey's Anatomy creator Shonda Rhimes let a little tidbit drop about the upcoming season of her hit show: Diahann Carroll, of Dynasty and Julia fame, will guest star some time next year. Only Shonda won't reveal exactly what role she'll play.

Rhimes revealed the casting news as critics toured the Grey's set, in one of those side trips from the press tour that critics like to make their readers think they took on their own. I can just see it now: a herd of critics, standing among hospital beds, eagerly asking Rhimes repeated questions about next season and Carroll's role, using different wording each time to try to trip her up, and Shonda just stonewalling. Yikes. Hope someone took the time to ask Shonda about that ridiculous finale...