A classic horror from 1973, presented as a double feature with Last House on the Left, Don't Look in the Basement (or it's alternate title, The Forgotten) is a low budget horror movie science fiction movies set in an (blog post) Asylum. The premise is interesting, but the twists more than obvious. However, does the acting and presentation make up funny horror movies for that?
Source: Don't Look in the Basement Movie Review - Decker Shado