10 Horror Movies & TV Shows You Can No Longer Watch
3. Guinea Pig
Guinea Pig is one of the most infamous horror franchises of all time - a series of six Japanese exploitation films focused on the human body being mutilated in extremely realistic fashion.
Memorably the second film, Guinea Pig 2: Flower of Flesh and Blood, caused Charlie Sheen to call the FBI after watching it, believing the movie he'd watched was indeed a real snuff film, but ultimately the material was confirmed to be fake by the authorities.
The franchise as a whole received its last home video release as a four-disc box set in 2005, which due to its rarity and the cult fandom surrounding the gore-filled series has caused prices to skyrocket on sites like eBay.
Guinea Pig has never seen the light of day on Blu-ray or streaming, and given the scuzzy, underground nature of the films themselves, the rights holders might prefer to keep it that way, as much as fans would love to see them released in HD.