Glenn Padnick, who co-founded and was president of Castle Rock Entertainment and was a key player in bringing 'Seinfeld' into ...

Glenn Padnick, the TV executive who guided Jerry Seinfeld's eponymous NBC sitcom through all nine seasons, has died. He was ...

Go behind the scenes of the show with this exclusive featurette from the 'Castle Rock: The Complete First Season' DVD bonus content. Go behind the scenes of the show in ET's exclusive featurette ...

Castle Rock still has five more episodes to unravel ... Alexis Nedd is a senior entertainment reporter at Mashable. A self-named "fanthropologist," she's a fantasy, sci-fi, and superhero nerd ...

Glenn Padnick, who co-founded Castle Rock Entertainment, served as its TV president and was a key player in bringing its crown-jewel sitcom Seinfeld into existence, has died. He was 77.