I would add to this thread an interesting module which I found recently on CPAN, Acme::Comment - This source filter module allows for comments of many different styles to be incorporated into your code, including multi-line C++ style comments. For example:

use Acme::Comment type => 'C++';

/*
    This is a comment ... 

    ... C++ style!
*/
[download]

Other commenting styles available through this module include - Fortran, HTML, LaTeX, Lisp and Pascal.