my %is_in_show = (
   MAX    => [ 'JETSONS', 'ALCATRAZ' ],
   WILMA  => [ 'FLINTSTONES', 'JETSONS', 'SIMPSONS', 'ALCATRAZ' ],
   HOMER  => [ 'SIMPSONS' ],
   ELIJAH => [ 'ALCATRAZ' ],
   ...
);