my %hash;
$hash{some_key}  = [ $this, $that ]; # [ ... ] creates an anonymous array ref.
$hash{other_key} = [ $the, $other ]; # and that is assigned to the hash.
foreach my $key ( keys %hash ) {
  print "key: $key, values: $hash{$key}[0], $hash{$key}[1]\n";
}