Developing such thing as Movie Pulse came to my mind quite early this year. And just before summer I registered the app and domain. The purpose of the app has always been very clear, straight forward: watch a movie, record your heart rate, store the movie along with a descriptive visualization of what happened to you in terms of positive stress.
And of course this came to mind of other scientists – one example is this work analyzing 50 male students watching “The Silence of the Lambs” see page 35 ff., Induction of emotional arousal in laboratory experiments by Michael Myrtek in “Heart and Emotion: Ambulatory Monitoring Studies in Everyday Life”.
But this would be different: a small everyday device will be the companion and do the work.