We Barely Knew Ye...
Poor Jeffrey Dean Morgan. His characters seem to die a lot. He was dead at the beginning Weeds and only seen as Judah Botwin in flashbacks. He had a few appearances on Grey's Anatomy as Denny Duquette, only to die in the season 2 finale. And now he died in Supernatural as John Winchester. If anyone's looking for someone to die in their new series, keep Jeffrey Dean Morgan in mind. ;)