Yes, Jerry is the central character who everone else revolves around. Or as Kramer calls him, the mayana (sp?) in The Opera episode. And then there is the episode The Dog where George and Elaine are forced to go out to see a movie without Jerry and they have a terrible time until both of them make fun of Jerry. Kramer, George, and Elaine wouldn't be as cool of characters if they weren't so attached to Jerry.