sentences:  Valdez has had recurring roles on television shows including "ER", "Veronica Mars", "Drake & Josh" and guest starring roles on "The Closer", NCIS, 24, "", "JAG", "The Shield", "", "Without a Trace", "That's So Raven", "Medical Investigation", "Boston Public" and One on One.He also starred in the HBO TV Movie, Walkout, directed by Edward James Olmos.Valdez portrays Robert Avila, an undercover police officer who poses as a high school student, in the film based on the true story of the five Mexican-American East LA high schools that organized a walkout in 1968 to protest poor school conditions.