I'm somewhere between "Like" and "Neutral" on Klute. The film looked really good, dialogue was clear, score was good. But it felt choppy to me, as if the director couldn't decide if he wanted a chase-thriller or a dramatic investigation into the psyche of an "upscale" prostitute.
What I found most interesting was the character study, not the "is the bad john gonna get her" part. Jane Fonda's opening monologue played on a tape recorder (that's a prehistoric iPod, kiddies... not that kiddies should be reading about Klute...) by Bad John says everything we need to know about her, including why she would open herself up to strange men capable of unspeakable evil: she doesn't believe in evil. Not really. She believes all people are born good and each has their own moral compass: shades of gray, but no black and white.
Movie characters like this always interest me because it's such a common point of view in the world, and yet it is proven wrong every day in the news. Hell, it's proven wrong every day in your own life. People are rotten to the core and capable of minor offenses and terrible offenses. But an offense is an offense -- we all commit them. Jane Fonda's prostitute has no problem contributing to the break-up of a marriage because she's helping a man feel good. It's not an offense equal to murder, but look at the fallout of broken marriages -- living by your feelings is reckless and causes a world of hurt.