This Unruly: a repository of video cut-ups
The reaction video remix subcategory describes clips where through the use of intercutting an individual or group appear to react to a subject, which could be a person or a thing.
Creator: Carl Reiner (1982). Steve Martin and Humphrey Bogart scene from Dead Men Don't Wear Plaid.
See for more details: http://www.uni-ak.ac.at/culture/withalm/wit-pdfs/wit03_gyoer.pdf
