Highlights of past "Dissenters" programs will be assembled in the WCAU-TV series' final telecast Sunday at noon. Segments offer the opinions of gypsy "Big Al," anti-capital punishment attorney Mary Alice Duffy, Cuban exile spokesman Cicilio Vasquez, Ethical Culture executive Algernon Black, Pennsylvania Athletic Commissioner Alfred Klein and satirist Jules Pfeiffer. Host Jean Shepherd will add some personal dissents.