19. Helen Seinfeld
Best-known episode: "The Pen"
She loves her son. She hates air conditioning, open cookie boxes, Aunt Stella and the ocean. (When Jerry tries scuba diving, she demands answers: "What's so great about underwater? What's down there to see?") Helen Seinfeld has a salty tongue for the gossip-loving seniors of Del Boca Vista, but she stands up loyally for Jerry, making her one of the show's truly beloved characters. "How can anyone not like you?" she asks. "You're a wonderful, wonderful, wonderful boy. Everybody likes you — it's impossible not to like you. Impossible. Morty?" Played by Liz Sheridan, still kicking at 86, Helen remains proud of her son even if she still hopes he might snag a job at Bloomingdale's someday. ROB SHEFFIELD