Answer
Yes, Carl Reiner made significant contributions to both'Your Show of Shows' and'Caesar's Hour'. He served as a writer and producer for'Your Show of Shows' from 1950 to 1954, collaborating with Sid Caesar and Imogene Coca. Later, he co-created and served as head writer for'Caesar's Hour', which ran from 1954 to 1957, continuing his successful partnership with Caesar.