In connection with HtM, ch. 10, I show Princess Nicotine (1905), a short, humorous special-effects film included in the first NFPF Treasures set: go to NFPF site. Martin Marks provides a historically sensitive piano accompaniment that "plays the picture." I also use the film to demonstrate at least a minute or two of indifferent performance of the kind that readers of this blog will know was a common source of complaint after 1910. (I literally play the piano with my back to the screen and make no attempt to synchronize rhythms or mood -- students typically find it quite disconcerting.)
I also use The Wizard of Oz (1910) from Treasures II. Students know the story so well (in its MGM version) that the film keeps their interest for its entire one-reel duration and gives them a good example of early narrative film and relationships to small-scale theatrical practices.