Ed McMahon is best known for his role as the spokesperson for the Publisher's Clearing House sweepstakes. What sweepstakes did Ed McMahon work for? He became a household name through his enthusiastic promotions, often appearing in commercials and on television to announce winners. What sweepstakes did Ed McMahon work for? His association with this iconic sweepstakes helped popularize the concept of winning large cash prizes, making it a staple in American culture.