An American actor and director, he gained prominence with his role as Lieutenant Martin Castillo in the television series "Miami Vice," earning a Golden Globe and an Emmy. Known for his powerful performances, he achieved critical acclaim for his portrayal of Jaime Escalante in "Stand and Deliver," receiving an Academy Award nomination. He has also starred in "Battlestar Galactica" as Admiral Adama. Beyond acting, he is an activist, focusing on Latino representation and community issues.