Yeah, I want to know when, too. Was it after "se_ohio_young_conservative" saw Stone's movie "JFK"?
the JFK film
the limo driver. check out his head movements. moving 180 degrees in 1/8 of a second.
watch as the passengers in the limo are thrown forward as the limo appears to be accelerating in speed.
The real version of the Zapruder Film was seen by researcher Rich DellaRosa. In the real version, the limo comes around the corner. stops for 4 seconds. and then lurches foward as Clint Hill reaches the back.
Most eyewitnesses who were there that day also say they saw the limo stop.