Hmm, this might be a way to make it more convienant.

#!/usr/bin/perl -w
package Namespace;

use strict;

# bless the namespace into our module
sub new
{
    my($class, $pkgname) = @_;
 bless \$pkgname, ref($class) || $class;
}

# wrap some code into our namespace
sub do
{
    my($self) = shift;
    my $code = join "", @_;

    eval qq{
        package $$self;
        $code;
    };
    if($@) {
        print "eval failed: $@\n";
    }
}
1;

package main;

my $n = new Namespace("foo");

$n->do(
        q{
            $a = 666;
            print "$a\n";
            print "a lot of stuff.\n";
        }
    );
[download]

This way, you could wrap large chunks of code with q{} and not have to worry about escaping characters.