This is 19 minute Russian film with English narration and some English subtitles about experiments on dogs where they were revived by artificial blood circulation. They literally severed a dog's head and kept it alive with artificial circulation, it's insane. And they did all of these experiments in the 30's. The dogs in the film actually lived on (Except for the one with it's head cut off ;_;). It gets you in the mood to read about more scientific/medical stuff like full-body transplants (Brain removed from one person and put into another, never been done before actually :o)
WARNING: It's slightly disturbing, but other than that, it's very interesting.
Link