George W. Maschke wrote on Jul 13^th, 2008 at 7:25pm:

I'm not aware of any evidence that hypnosis is of any help for passing polygraph examinations. As for a person who blatantly lied but passed using countermeasures, the most infamous example is Aldrich Ames.

Or, Gary Ridgway, our nations most notorious serial killer, who killed after passing a police polygraph.