Jack Nicholson writes and Roger Corman directs this valiant effort to cinematically recreate an acid trip, starring Peter Fonda. It uses every "psychedelic" effect known in 1967, and strings together a series of evermore imaginative dreamlike sequences. I think it is clearly surpassed by Gilliam's "Fear and Loathing in Las Vegas" in almost every respect, but it possessed the virtue of being timely, and remains an authentic and revealing product of its times.

This drug exploitation picture is a complex juxtaposition of mesmerizing images and sounds, but can't be taken very seriously. Roger Corman finds the right tone but achieves poor narrative results. It's just not engaging as it should be.

Unintentionally comic youth exploitation film.

lol

I felt this did justice to what an LSD trip is actually like... sort of. Only problem is (like most acid stories) it's not all that entertaining unless you can relate, i.e. flashbacks, or are tripping yourself. It's good to know Jack Nicholson got down on doses though.

silly and badly made, but quite entertaining

Damn I miss acid.

Booooooooooooring.

It made psychedelia boring...

Interesting.

This movie is very interesting to watch, and there's one funny scene, but that's about it. The story is about this guy who directs commercials, he decides to take some LSD for the experience. The rest of the movie is his trip, hence the title. It's a crazy movie, but of course, a trip would be crazy. This is probably a very accurate portrayal of a trip, so this is an interesting movie to watch in case you've ever wondered what a trip is like. Otherwise, I don't recommend watching it.