1961 drama starring Charlton Heston and Sophia Loren (2,3)
(Other definitions for el cid that I've seen before include "epic movie" , "Ruy Diaz starts" , "Rodrigo Diaz de Vivar was his original name" , "Role of Charlton" , "Eleventh Century Spanish hero" .)
(Another definition for elcid that I've seen is " Spanish hero".)