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Nightmare Fuel: Jam
Chris Morris's Jam (TV)
This troper was particularly horrified at the one where a man jumps into a wood chipper that sprays his bloody remains all over his ex's house (and into her face, as she was leaning out of the window).
The man who wakes up and discovers he's just a head and a spinal column.
Most of it, really. The series, with few exceptions, is deliberately intended to make the viewer incredibly uncomfortable if not terrified. Unsurprising given that the opening more or less tells you it's about people who have totally broken down beyond all rationality.