Bob Smith, my assistant programmer, can always be found
 hard at work in his cubicle. Bob works independently, without
 wasting company time talking to colleagues. Bob never
 thinks twice about assisting fellow employees, and he always
 finishes given assignments on time. Often Bob takes extended
 measures to complete his work, sometimes skipping coffee
 breaks. Bob is a dedicated individual who has absolutely no
 vanity in spite of his high accomplishments and profound
 knowledge in his field. I firmly believe that Bob can be
 classed as a high-calibre employee, the type which cannot be
 dispensed with. Consequently, I duly recommend that Bob be
 promoted to executive management, and a proposal will be
 sent away as soon as possible.
 
 Project Leader
 

A MEMO WAS SOON SENT FOLLOWING THE LETTER:

That stupid idiot (Bob) was reading over my shoulder when I wrote the report sent to you earlier today. Kindly read every second line (ie. 1, 3, 5, 7, 9, ..) for my true assessment of him.

Regards, Project Leader

--
Author Unknown