Here's another golfed Perl solution, at 67 characters: 
sub rle {
($c)=@_;my$i;map$c ne$_?("$i*$c",$i=1,$c=$_)[0]:++$i&&(),@_,!$_[-1]
}

[download]

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

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