The film that made the biggest impression on me in the eighties was horror comedy Basket Case (1982). This movie, along with the two sequels it spawned, remain personal favourites.
Basket Case tells the story of a parasitic conjoined twin that survives the surgical removal from host brother Duane. It becomes Duane's lot in life to care for the hideously malformed twin, Beliol, carrying him around in a comedically suspicious laundry hamper.
With Duane's help, Beliol exacts bloody revenge on the doctors who carried out the surgical separation and treated him as medical waste.
Low budget special effects and dead pan delivery from Duane add to the charm of this film.
In the final scene, Duane and Belial both fall from a hotel window, one assumes, to their death. Touchingly, they land in the conjoined configuration they had at birth.
If you look beyond the gore fest, it really is a tragic tale of sibling love and rivalry and a very big basket.