Actor best known for his role on the television show Grey's Anatomy and for being a go-to guy for Spike Lee. In 2014, he began playing Chancellor Thelonious Jaha on The CW series The 100.
He became one of the first graduates from Willowridge High School, Houston, in 1981.
He was the first African-American to be granted full citizenship in Sierra Leone based on his DNA.
He married Jenisa Marie Garland in February 1996, and the couple have three children.
He was dismissed from the cast of Grey's Anatomy following his fight with actor Patrick Dempsey, during which he used a homophobic slur.