Jimmie Walker is an American actor and comedian, best known for his role as J.J. Evans on the popular television show Good Times, which aired from 1974 to 1979. His character was famous for the catchphrase "Dy-no-mite!" and became a cultural icon during the show's run. Walker's performance earned him a nomination for a Primetime Emmy Award. In addition to his television work, Walker has appeared in various films and stand-up comedy specials. He has also made guest appearances on numerous talk shows and reality programs, showcasing his comedic talent and engaging personality. Walker continues to perform and entertain audiences across the country.