John Amos (born December 27, 1939) is an American actor who played James Evans, Sr. on the 1970s television series Good Times. His television work includes roles in The Mary Tyler Moore Show, the miniseries Roots, for which he received an Emmy nomination, and a recurring role as Admiral Percy Fitzwallace on The West Wing. He also played the father of Will Smith's character's girlfriend, Lisa Wilkes, in The Fresh Prince of Bel-Air.He has also appeared on Broadway and in numerous motion pictures in a career that spans four decades. He has received nominations for a Primetime Emmy Award and NAACP Image Award. He was considered the best role model for black men with families in America.