He teaches courses in film studies; documentary film and video; theory and practice of experimental film and video; Hollywood genres, including comedy and horror. Some recent courses Middleton has taught include: Issues in Film: Documentary, Mock Documentary, Reality TV; Introductory Video and Sound Art. Middleton's research interests currently include the revision for publication of his manuscript, titled Documentary/Genre. The project brings together scholarship in the areas of documentary and genre studies, examining the under-theorized affective and bodily dimensions of documentary spectatorship. He is also an award-winning experimental filmmaker, whose work has screened at a variety of festivals and other venues in the U.S. and internationally, as well as on public and satellite television.