Paula Vs. Elliott
I'm with those who really like this movie, but I think Paula's character is what flaws it enough to make it really unpleasant in places. (I remember reading a review years later -- I think it was Ebert -- who said that she made the movie so mean-spirited he couldn't forgive her even by the end of the movie.)
Well, me too. I just can't stand her. She's absolutely awful to this guy, who is pretty great about the entire situation from day 1. While the movie does attempt to set up a backstory of why she hates all men (her boyfriend leaving her, subletting, etc), the way it's played to me is all wrong. Instead of coming across as a basically nice person at heart, Marsha Mason plays here with such a bitchy, whiny, entitled, mean-spirited edge, I'm never really rooting for them to get together. When counterpointed against what a genuinely likeable and kind person Elliott is, it just makes her seem even more awful.
The best example to me is the scene when Paula's purse is snatched, and she totally blames Elliott and is a staggering jerk to him for absolutely no reason (er, I guess because he was going to be nice and buy some Chianti, whatever). He then tries to make it up to her by going after the thieves, is nearly killed, and is she grateful? Nope. She's even more of a jerk when he returns.
Paula does this the entire film (see also the scene when he lends her some rent money and asks her to be nicer to him -- she immediately treats him like a jerk again). It always cracks me up that the one time in the movie that Paula is actually semi-nice and apologetic to Elliott, he falls asleep before she even says it. So he missed the one scene where she was nice to him.
I always wondered if this was a choice by Marsha Mason, to play her this hard-edged, or if she was directed to do so. I do think Mason can be wonderful, but I just found it weird that she is so flat and unlikeable in this, looks terrible (and I usually think she's really pretty), and is supposed to be the person we are rooting for.
I like the movie (it's funny and Dreyfuss and Cummings are awesome), but I still think Paula got way lucky with this guy. Elliott deserved better.