>>Many non-linear plots (Ground Hog Day,
>>Run Lola Run, Sliding Doors etc) cause no problems for mass audiences in
>>terms of comprehensibility.

gotta be careful with our terminology here . . . these movies have
absolutely
linear stories, and only to the extent that the plot is the arrangement of
the
story in the telling can we say that the plot is non-linear . . . in some
other
discourses the plt itself is linear andonly the narration is non-linear

i think it makes little sense to see every moive with a flashback as
essentially non-linear . . . the question insofar as comprehensibility
is concerned is whether the events of the film, no matter in what
order we see them, can be rearranged in our minds to construct
a coherent story

----
Online resources for film/TV studies may be found at ScreenSite
http://www.tcf.ua.edu/ScreenSite