I've read a lot of TPR(S) and also Krashen, whose research I believe the system is based on. It is somewhat difficult to use some of this theory over video, but we often discuss what we can take from ideas like this to help beginning speakers when they don't have a wide vocabulary they can access. I'm curious if using TPR(S) helped you learn a language? I own a few books on it, but I haven't seen it actually widely implemented.