The most vivid visualization that has always stuck out in my mind is one I had on DXM. A close-eyed visualization, although my eyes weren't closed. Buy a sleep-mask, put it on, and open your eyes. All these so-called "close-eyed" visualizations require is absolute darkness. Moving on...

It was much like the scene from the Lion King where the baboon guy lifts the lion cub above his head for the population to see. Although everyone was human I feel that is the best way to describe it. Very realistic. Totally amazing. I was in awe and I guess I continue to be.

I haven't had an experience anywhere this profound in quite a while. I had many experiences like this on DXM.