I was offered this example of a "productive fake documentary on YouTube" by a friend, student, or colleague who responded when I crowdsourced my FakeTube Project
via social networks. I later blogged, spoke,
on it (and other videos) as promised.
"The practice of captioning (specifically, cats) started many years ago on anonymous forums, most prominently called the *chans. Supposedly, the practice of posting and the actual type of these images was termed "Caturday": A day when people all around the internet create, submit, send, email and send pictures of lolcat's around the world ..."[cit]
"For over 25 years, filmmaker Ken Burns has been producing films that are unafraid of controversy and tragedy ... History made them famous. Ken Burns made them real."[cit]