I've seen 3 different edits of this movie. The first version, which I saw at the drive-in in early '68 and dug so much I've gone through 2 copies of the soundtrack album, is the same version that was released on video cassette. Then, about 3 years ago on one of the cable movie channels what was broadcast was an extended version which included lots more "hallucinogenic" scenes. It was better, being more complete compared to the original release, by virtue of these extended scenes. So I went on line and ordered a DVD copy of what I thought was this version. What I received was a DVD that had both "Psych-Out" and "The Trip" but the version of "Psych-Out" was even shorter than the original release. Go figure.
As to the movie itself, in retrospect it is somewhat funny in that none of the lead characters were longhairs (I think Jack Nicholson's ponytail was for real) and the wigs are as bad as any you'd see in an old cowboys'n'indians movie and much of the dialog is hokey but it is visually sumptuous and the music - especially the trippy songs attributed to The Storybook - is such a time capsule of that time and place. The soundtrack includes one of the wildest acid-rock instrumentals ever recorded - a tune called "Ashbury Wednesday"...it is like a backwards version of Jimi Hendrix's "Purple Haze" and just screams. The band, who's name I can't pronounce, included Rusty Young of later Poco pedal steel guitar fame.