Carl Reiner and Carl Sagan were both influential figures in their respective fields. Reiner was an American actor, director, producer, and writer who was best known for his role in the classic television sitcom 'The Dick Van Dyke Show'. Sagan was an American astronomer, astrophysicist, cosmologist, author, and science communicator who was best known for his popular science books and television series 'Cosmos: A Personal Voyage'. Both men had a lasting impact on their respective fields and are remembered fondly by fans around the world.