None too pretty, but here's one that gets the job done at 58: 
sub rle {
  my$c;map{shift;$c++;$_[0]ne$_?do{$a="$_*$c";$c=0;$a}:()}@_
}

[download]
Though, it has some "issues"... 
   MeowChow                                   
               s aamecha.s a..a\u$&owag.print

In reply to Re: PPGA - Prolog-Perl Golf Association: Run-length encoding by MeowChow
in thread PPGA - Prolog-Perl Golf Association: Run-length encoding by princepawn

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