"Daddy's Song" from Head dir Bob Rafelson (1968)

I think the best part of this sequence is how the flashes are jump cuts, but only slightly. If this film had been made in the digital/post MTV age (and that's a big if), they probably would have matched on action far more precisely, but instead the effect is extra disorienting as bodies jolt horizontally back and forth. In a way though, Head anticipates digital; along with 2001 (released the same year), its the dawn of narrative film as postproduction fantasia. "Narrative" is, of course, highly subjective as Head shares many traits with the art film (it's essentially a long, at times nightmarish acid sequence- not unlike another, less succesful Nicholson-associated outing from the year before- The Trip), but Head is among the first of a breed of films whose plotlines wouldn't be possible without post-production. It's a shame then that Bob Rafelson, after making such a bold experiment, would return to shooting only in traditional form.