Patrick Dempsey held a Portland magazine with himself on the cover as he left lunch in LA yesterday. While he was checking out his feature article, last night on Grey's, his character Derek was dealing with serious stress and difficult decisions. Offscreen, he seems happy to stick with the show, but his colleagues are a different story. The show's creator, Shonda Rimes, tried to clear up the rumors that Katherine Heigl and T.R. Knight are leaving Seattle Grace, but even so it's always something with this cast.