Exploit "free whitespace" Suppose a codegolf challenge doesn't count whitespace in the length of your program.  Cheat this system by encoding your script into whitespace, and golf a script which decodes and executes embedded whitespace.

Example

My solution to JBernardo's Meta Golf Challenge was to encode Sage (or Python) code into whitespace, and golf the decoder.

s = ' '
for c in '&lt;lots of whitespace&gt;'.split(s):
    s+=chr(len(c))
exec s


The encoding is to take a script, prepend a newline, and for each character c in the script, output ord(c) tabs followed by a space.  Prepending a newline is necessary since I'm using Python and I start the script s with a space.

Scoring

A complete solution contains a description of the encoding you use (if it's complicated, provide a script), and a 'decode-and-execute' script.  Your score is the number of non-whitespace characters in the decode-and-execute script.  

Whitespace (the language) is forbidden

Moreover, any language which has a complete set of operators which only use whitespace characters is not allowed: I'll accept the lowest nonzero score.
CPAN, 16

use Acme::Bleach;


CPAN has it all.  Or at least, just the right module.