Stand-up comic and actor Bernie Mac exploded onto the screen with “The Original Kings of Comedy” (2001) after years of working comedy stages in his native Chicago. His edgy and largely autobiographical material about his background and African-American culture fell in step with a new wave of high-profile black comedians like fellow “Kings,” D.L. Hughley and Steve Harvey. And like his “Comedy Kings” co-stars, his hilariously frank material led to Mac’s own successful sitcom, “The Bernie Mac Show” (Fox, 2001-06). An increasing presence on the big screen as well, Mac’s sometimes gruff but always