I have. maybe not in that exact meaning, not like.. I have no idea what's goin on and I'm just watchin this happen.. but, in the right mindset after a few hours of shrooming, I've gotten "flashbacks" of sorts. not exactly flashbacks, but (because of the state of mind) memories of things that, as I've imagined them I've seen them.
feel free to disagree, but I see the similarities.