Here's mine, did someone say GOLF!

cheers

tachyon

print sqroot(2,100);

# long version
sub sqroot {
    $number = shift;
    $iterate = shift;
    $guess = $number;
    for (0..$iterate) {
        $guess = (($number/$guess) + $guess)/2 ;
    }
  return $guess;
}

# golf at 44 strokes
sub sqroot {
    ($n,$i)=@_;$g=$n;$g=($n/$g+$g)/2for 0..$i;$g
}
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