This is sort of a dream sequence, sort of a hallucination — but mostly, this funky-ass scene from Jacob's Ladder is 100 percent awesome. Tim Robbins has a brain-melt to the tune of James Brown's classic jam, "My Thang." Spoilers...

How this scene fits into the dream sequence/hallucination/epilepsy attack canon is complex, given the big reveal at the end of the film. Suffice to say, Robbins plays a Vietnam veteran who had an experimental hallucinogen tested on him, which was supposed to increase his aggressiveness. Thanks to WindowLickinDayWalker for the suggestion!