Apart from looking terrible, what is wrong with using local our variables?

It is a very obvious symptom of lack of experience :)

The "wrong" way

local our $foo = 1;
Dance();
sub Dance { 
    print "I win, $foo\n";
}
[download]

The "right" way

Dance( 1 );
sub Dance {
    my( $foo ) = @_;
    print "I win, $foo\n";
}
[download]

See Tutorials: Variable Scoping in Perl: the basics, Coping with Scoping

See also http://learn.perl.org/books/beginning-perl/ and the Modern Perl Book