James Carter Walker, Jr. (born June 25, 1947), known professionally as Jimmie Walker, is an American actor and comedian. Walker is best known for portraying James Evans, Jr. (J.J.), the oldest son of Florida and James Evans, Sr. on the CBS television series Good Times which originally ran from 1974–1979. Walker was nominated for Golden Globe awards Best Supporting Actor In A Television Series in 1975 and 1976 for his role. While on the show, Walker’s character was known for the catchphrase “Dy-no-mite!” which he also used in his mid–1970s TV commercial for a Panasonic line of cassette and 8-track tape players. He also starred in Let’s Do It Again with John Amos, and The Greatest Thing That Almost Happened with James Earl Jones. Walker continues to tour the country with his stand-up comedy routine.
Walker was born in The Bronx, New York. Walker attended Theodore Roosevelt High School in New York City. Through a federal program known as SEEK, or “Search for Education, Evaluation, and Knowledge,” he continued his studies and entered into the field of radio engineering with WRVR. As a young man, Walker was a vendor at Yankee Stadium, starting with the 1964 World Series. He was given a silver dollar by Mickey Mantle, which he still has. Walker was very friendly with Gary Cohen, who went on to be operations manager at Yankee Stadium.