A scientist develops a means to keep human body parts alive. When he unexpectedly must use his discovery on someone close to him, events do not go as planned. This film is one of my personal favorite finds. It has all the charm of crazy scientist films, such as Frankenstein, and it's even been made into a musical! I found this science-fiction/horror film, directed by Joseph Green, as a double feature with another film, but this was the gem. I highly recommend you find this film!
P.S. if you REALLY broke, This film has fallen into the public domain and can be freely downloaded from http://www.archive.org/details/PhantasmagoriaTheater-TheBrainThatWouldntDie132