, I love hearing some of the old Tex Johnson stories.
As this story goes, the then head of Boeing (can't remember his name) was entertaining the Pan Am heavies on a barge on the lake. After almost choking at the sight of his prototype doing a barrel-roll he asked a near-by person if he could have one of their heart tablets (he actually had no diagnosed heart problems).
At the debrief, he called Tex in and asked what the hell he thought he was doing. Tex replied something like "its OK, I have found that if you pull the stick back as you enter the roll the aircraft maintains 1 possitive G, and thinks it is still flying the right way up".
After a moments silence and thinking about the reply, the Boeing head realised that Tex had been doing this regularly in the skies around Boeing field to perfect the manouvre and sacked him on the spot. No fear for Tex, as I believe Boeing sacked him a number of times during his carrier for being too much of a "cowboy", but never actually went through with the dismissal. Who else would be mad enough to fly an untested aircraft?