I am applying to the FBI in the near future and have decided to admit that I know about polygraph examinations and thus am a poor candidate for this type of testing (per lie behind the lie-detector). 

I'm wondering if anyone has any experience trying this approach? What is the most common response from an FBI tester to this information? 

Whatever the result, thanks for the help and resources.

Tungsten,
Your approach is quite novel, but would be professionally suicidal.  I suggest you use your knowledge instead of confessing possession of it.  Should you choose to take the latter course, you will most likely be accused of employing countermeasures (whether you do or not) and will undoubtedly be found to be deceptive (currently a kiss of death to your stated employment goals).

I concur with the recommendations of the others.  Admitting that you know the polygraph is a farce is overwhelmingly likely to lead to negative results.

In nearly every polygraph examination (regardless of agency), during the “pre-test interview,” the examiner asks the subject what he/she knows about the "test."  I can only imagine an FBI examiner's response to someone who responds with "I know that polygraph testing is a farce, has never been proven to determine truth from deception with better than chance levels of accuracy, and is easily defeated by simple countermeasures--which I am well versed in by the way...  Furthermore, opposition to this type of "testing"--pre-employment screening--among academics is near universal."

I would imagine the polygrapher's response to be something along the lines of "So.  You know about countermeasures.  Do you plan to use them today?"  By simply asking this question, the examiner can immediately place you into a no-win situation before the test even starts.  If you answer "yes" (which I assume that you will do since you are going with the complete honesty approach), the examiner has your admission that you attempted to beat the test, allowing him to render a failing decision no matter what the charts show.  On the other hand, if you say "no," you put yourself into a logically indefensible position.  The examiner's reply is likely to be "Let me get this straight.  You know that this process is unreliable, wrongly fails up to 50% of people tested and yet you are choosing not to employ techniques to protect yourself from a false positive.  Why?"

If you choose to go down this road, you have been warned.  And, if so, you should be prepared for the questions above (although I have no suggestion as to how to answer them). You may wish to reconsider your plans.  If I were submitting to an FBI polygraph right now, I would not admit my knowledge of the process when asked.  Instead, I would say something like "I heard that the polygraph was recently very helpful in assessing the credibility of information regarding the plans for follow-up terror attacks against Atlanta" or something similar.

tungsten,

I wish you all the best in your application with the Bureau. Assuming you make it through the process as far as the polygraph (which is generally scheduled after a tentative job offer has been made), please consider sharing your experience  here for the benefit of others who face the same choice.

Tungsten,

You need to talk to a few more people.  I admitted knowing about the polygraph and passed.

My polygraph was with the FBI.

The examiner asked if I had researched polygraphs.  I told her I had and explained to her the stuff I'd read (including stuff at this site.)  She then told me that the polygraph doesn't tell whether I'm lying, but it tells my physiological reactions.  She said that I could beat a polygraph, but it would take alot of practice.   

Then, during the exam she asked me if I intended to deceive her on the test.  I answered, "no".  It wasn't a fun experience, but it also wasn't as bad as I thought it would be.

It seemed to me that my examiner stuck to the Probable lie format.  It was obvious that some of the questions were probable lie and some were specific ones that were easier to be more certain about.

I didn't try any CM's, but I could feel myself naturally reacting to the probable lie questions.  Then, when I came to a relevant question, I felt much more calm.   

I think this site helped in letting me know that the examiners expect a reaction to probable lie questions because of the uncertain nature of what they ask.  Knowing this made it easier for me to calm down when I got the relevant questions.  I wasn't still stressing about whether I really had told a lie while in college or started a rumor about someone.   

My examiner seemed pretty reasonable.  I didn't feel like I needed any special tricks to get through the process.  I guess alot of how polygraphs go depends on who you get as an examiner.