You might try looking at Mimi White's Tele-Advising: Therapeutic Discourse
on American Television.  Chapel Hill and London: University of North
Carolina Press, 1992.  It seems to me that I have recently read something
on "reality tv"-- perhaps by John Fiske.  Perhaps there might be something
for you in Media Matters or Power Plays.  Both deal with the "real" Rodney
King footage.
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