Come on, just use a real full HTML parser.

use warnings;
use XML::Twig;

our $doc = q(
<title>
This is a very good site for regular Expressions.
Very helpful.
Thanks.
</title>
<p>
Some other text we don't want to extract.
);

my $twig = XML::Twig->new;
$twig->parse_html($doc);
my($title_elt) = $twig->findnodes("//title");
my $title = $title_elt->trimmed_text;
print "$title\n"

__END__
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