Estelle Harris, best known for her work on "Seinfeld" and in the "Toy Story" movies, has died. The beloved actress passed away Saturday evening in Palm Desert, Calif., her son Glen confirmed. She was 93. Jason Alexander paid tribute to his "TV mama" on Twitter, calling her one of his favorite people. "The joy of playing with her and relishing her glorious laughter was a treat. I adore you, Estelle. Love to your family. Serenity now and always," he wrote.