It's kind of interesting as a time capsule of 1972 as well. The pot-smoking hippie film crew versus the beehives and fundie hair. The film is pretty much all-Marjoe all the time. Fortunately, he really is a charismatic bastard. Not much narration or information (more would have been appreciated) but the dope-addled filmmakers still managed to produce something pretty vivid.
With his cover blown after this film expose came out, Marjoe took his natural charisma and tried his hand at acting. He also seemed interested in being a rock star, and there's a funny bit where he mentions 'stealing' Mick Jagger's crooked-arm-on-hip strut and there's a quick montage of Marjoe doing it at various venues. But the best scene is at the very end with his dog. I don't want to spoil it, so go watch the movie.
More about Marjoe.