Edward James Olmos (born February 24, 1947) is an American actor and director. Among his most memorable roles are William Adama in the re-imagined "Battlestar Galactica", Lieutenant Martin "Marty" Castillo in "Miami Vice", teacher Jaime Escalante in "Stand and Deliver", patriarch Abraham Quintanilla, Jr. in the film "Selena", Detective Gaff in "Blade Runner", and narrator El Pachuco in both the stage and film versions of "Zoot Suit"