They call it Mandy over here in the UK

Been into it since back in 1990 when the rave scene was in full swing over here. I've tripped crazy on it a few times. Full visuals. Once had doors appearing in a club that friends assure me were not there, and I was (to my perceptions at least), moving from room to room. I believe now that I was moving amongst the different elements of the music. I also fully entered some hippy art paintings in a little gallery at a festival, felt myself warp into the painting, spent some time dancing around and hugging the people in the painting. Not sure how much time passed, but when I remembered my friend and felt I should find him I automatically warped back out of the painting. First thins I saw as I checked my 'new' surroundings was the middle aged hippy guy who was looking after the gallery, so I approached him and he said "you've been inside the painting haven't you - many other have too. Was it beautiful for you?" or something like that - proper magic.
I also saw music at a little free party (small unlicensed rave) one birthday. That time there was the addition of some rather strong Peruvian flake, but I was hand dancing to 'One Night In Hackney' and suddenly the music became a solid ball of light that was moving my hands (and me) around the place. Lasted well into the next tune. Simply epic.
There was one other time that springs to mind, but this was candy flipping (acid and mandy). I was bouncing around to some dub, but then couldn't stop, as I was no longer bouncing, instead the ground had started moving in waves. At the top of each wave I would be thrown up in the air. So glad it was not techno or I may have been in serious danger. lol It took my mates to hold me to stop the effect occurring. Awesome memories.
http://www.youtube.com/watch?v=tvgK-_Uv9UQ
*Edit - having said all this, I love to trip. Many of my friends never experience anything like this. I trip harder than any of my friends on acid too. People who do acid with me often say they trip harder in my company than at other times.