MORE SPOILERS FOLLOW
your comments are interesting, but misled. first off, no one ever says anything about doing anything to kate winslet's character while she's unconscious. while she was unconscious and getting her memory erased (before the events of the film), elijah wood's character takes off with her personal effects (the ones regarding joel, used for the brain mapping) for the purpose of seducing her later, once she's conscious. he also takes her underwear, but they're clean ones, as he points out (: anyway, it's still an unethical and creepy activity, but it's kinda funny, in the way that fucking her while she's unconscious would not be. this is kaufman's bread and butter--he treads that line in all his movies.
as for the "plot device," okay. yes, the memory erasing company is a plot device, in the same way that in "star wars," the death star is a plot device--they're things that don't really exist, but that the movie wouldn't be interesting without. what if someone's life were really a staged television show? obviously, no one's life is likely like that, but if we couldn't imagine it, there would be no "truman show." if you're unwilling to suspend your disbelief for a couple of hours, perhaps you should stop watching movies altogether.
as for the characters' supposed one-dimensionality, the central premise of kate winslet's character, which is revisited throughout the movie, is that people perceive her one or more ways, whereas she is in fact completely different from those perceptions. meanwhile jim carrey's character, who at first glance seems archetypically mild-mannered, in fact is very capable of defending himself and can even be a prick. how much more fleshing-out do you want in romantic leads?
finally, i hate to disappoint you further, but as of this typing, 8961 pretty film-savvy voters at IMDB have moved Eternal Sunshine up to #44 with an 8.7/10 mean vote. i don't really feel the need to back up my opinions with the opinions of others, but you said "50 5-star reviews," and i thought you should know that the official reviewers' ratings aren't a fluke (:
for the record, i've already said i didn't much care for requiem, and i'll say now that i don't much care for schindler's list, but i'm pretty sure you're wrong about this one.
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- christ@myself.com - fuck a cat, kill yourself - my alter ego has five stars